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Running same code multiple times, while only changing two parameters

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  Running same code multiple times, while only changing two parameters semeon.risom@gmail.com - 2015-01-04 08:47 -0800
    Re: Running same code multiple times, while only changing two parameters "J.O. Aho" <user@example.net> - 2015-01-04 19:13 +0100
      Re: Running same code multiple times, while only changing two parameters semeon.risom@gmail.com - 2015-01-04 13:18 -0800
    Re: Running same code multiple times, while only changing two parameters Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-01-04 20:58 +0000
      Re: Running same code multiple times, while only changing two parameters semeon.risom@gmail.com - 2015-01-04 13:15 -0800
        Re: Running same code multiple times, while only changing two parameters "Christoph M. Becker" <cmbecker69@arcor.de> - 2015-01-04 23:21 +0100
    Re: Running same code multiple times, while only changing two parameters Richard Damon <Richard@Damon-Family.org> - 2015-01-04 16:21 -0500
    Re: Running same code multiple times, while only changing two parameters Denis McMahon <denismfmcmahon@gmail.com> - 2015-01-04 22:22 +0000
      Re: Running same code multiple times, while only changing two parameters Denis McMahon <denismfmcmahon@gmail.com> - 2015-01-04 23:10 +0000
        Re: Running same code multiple times, while only changing two parameters Denis McMahon <denismfmcmahon@gmail.com> - 2015-01-04 23:14 +0000
          Re: Running same code multiple times, while only changing two parameters semeon.risom@gmail.com - 2015-01-05 12:47 -0800
            Re: Running same code multiple times, while only changing two parameters semeon.risom@gmail.com - 2015-01-05 12:50 -0800
              Re: Running same code multiple times, while only changing two parameters Denis McMahon <denismfmcmahon@gmail.com> - 2015-01-06 00:42 +0000
                Re: Running same code multiple times, while only changing two parameters Denis McMahon <denismfmcmahon@gmail.com> - 2015-01-06 18:59 +0000
            Re: Running same code multiple times, while only changing two parameters Denis McMahon <denismfmcmahon@gmail.com> - 2015-01-06 00:28 +0000

#14797 — Running same code multiple times, while only changing two parameters

Hello - 

Beginner at PHP. I'm attempting to run the piece of code (attached below) that will generate an image. What I'm attempting to do is run the same piece of code 600 times to create 600 images. The only change is two parameters labeled "orientation" and "frequency", which I have a list of values I'm hoping to feed into the code. 

As it is, the code gives the option of including each value into their respective parameters at once, but unfortunately creates an image for all possible pairs of values (600^2, I think). I also get the following message if I exceed a 30 second loading time:

"Fatal error: Maximum execution time of 30 seconds exceeded in /home/cogscinl/public_html/files/software/gabor/libgabor.php on line 69


Any advice on a way to work this code to create the 600 images?

Thanks!

- Semeon


<?php

/**
 * This file is part of <http://www.cogsci.nl>.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
**/

require_once("libgabor.php");

if (array_key_exists("generate", $_GET)) {
	$orient = $_GET["orient"];
	$size = $_GET["size"];
	$std = $_GET["std"];
	$env = $_GET["env"];
	$freq = $_GET["freq"];
	$phase = $_GET["phase"];
	$red0 = $_GET["red0"];
	$green0 = $_GET["green0"];
	$blue0 = $_GET["blue0"];
	$red1 = $_GET["red1"];
	$green1 = $_GET["green1"];
	$blue1 = $_GET["blue1"];
	$red2 = $_GET["red2"];
	$green2 = $_GET["green2"];
	$blue2 = $_GET["blue2"];
} else {
	$orient = 45;
	$std = 12;
	$size = 8 * $std;
	$env = "gaussian";
	$freq = 0.1;
	$phase = 0.0;
	$red0 = 128;
	$green0 = 128;
	$blue0 = 128;
	$red1 = 255;
	$green1 = 255;
	$blue1 = 255;
	$red2 = 0;
	$green2 = 0;
	$blue2 = 0;
}

?>

<p>
Gabor patches are sinusoidal gratings, typically with a Gaussian envelope, which are frequently used as stimuli in psychological experiments. Using this page you can easily create and download high quality Gabor patches.
As with most topics, you can find out more about Gabor patches on <a href="http://en.wikipedia.org/wiki/Gabor_filter" target="newwindow">Wikipedia</a>.
</p>

<p>
In order to generate multiple Gabor patches at once, you can enter multiple values separated by a comma (",").
You can download generated stimuli separately or at once as a .zip file.
Please note that the script may time out if you generate too many or very large stimuli.
</p>

<p>
If you are here in the hope of training your eyesight, see <a href='http://www.cogsci.nl/blog/miscellaneous/226-can-you-brain-train-your-way-to-perfect-eyesight'>this post</a> for a critical discussion of recent claims that visual training with Gabor patches improves vision.
</p>

<h2>Specify and generate</h2>

<?php require("gaborform.php"); ?>

<h2>View and download</h2>

<?php

error_reporting(E_ALL);

$zipfile = "tmp/gabor-" . rand() . ".zip";
$zip = new ZipArchive();
if ($zip->open($zipfile, ZIPARCHIVE::CREATE)!==TRUE) {
    print "<p><b>Warning:</b> failed to create zip archive!</p>\n";
}

echo "<p align=\"center\"><a href=\"$zipfile\">Download all patches as a .zip file</a></p>\n";

echo "<table width=\"100%\" class=\"defaulttable\">\n";

foreach (explode(",", $orient) as $_orient) {
	$_orient = floatval($_orient);
	foreach (explode(",", $size) as $_size) {
		$_size = floatval($_size);
		foreach (explode(",", $std) as $_std) {
			$_std = floatval($_std);
			foreach (explode(",", $freq) as $_freq) {
				$_freq = floatval($_freq);
				foreach (explode(",", $phase) as $_phase) {
					$_phase = floatval($_phase);
					foreach (explode(",", $red0) as $_red0) {
						$_red0 = floatval($_red0);
						foreach (explode(",", $green0) as $_green0) {
							$_green0 = floatval($_green0);
							foreach (explode(",", $blue0) as $_blue0) {
								$_blue0 = floatval($_blue0);
								foreach (explode(",", $red1) as $_red1) {
									$_red1 = floatval($_red1);
									foreach (explode(",", $green1) as $_green1) {
										$_green1 = floatval($_green1);
										foreach (explode(",", $blue1) as $_blue1) {
											$_blue1 = floatval($_blue1);
											foreach (explode(",", $red2) as $_red2) {
												$_red2 = floatval($_red2);
												foreach (explode(",", $green2) as $_green2) {
													$_green2 = floatval($_green2);
													foreach (explode(",", $blue2) as $_blue2) {
														$_blue2 = floatval($_blue2);
														$color0 = array($_red0, $_green0, $_blue0);
														$color1 = array($_red1, $_green1, $_blue1);
														$color2 = array($_red2, $_green2, $_blue2);
														$fname = show_gabor($_orient, $_size, $_std, $_freq,
															$_phase, $color0, $color1, $color2, $env);
														$zip->addFile($fname);
													}
												}
											}
										}
									}
								}
							}
						}
					}
				}
			}
		}
	}
}
$zip->close();
echo "</table>\n";
?>
<p><i><a href='https://github.com/smathot/gabor-patch-generator'>Source code</a></i></p>

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#14798

On 04/01/15 17:47, semeon.risom@gmail.com wrote:
> Hello -
>
> Beginner at PHP. I'm attempting to run the piece of code (attached below) that will generate an image.
> What I'm attempting to do is run the same piece of code 600 times to create 600 images.
> The only change is two parameters labeled "orientation" and "frequency", which I have a list of values I'm hoping to feed into the code.

You need to make it into a function which takes the which takes all the 
variables that can change as in parameters.

function generate_my_picture($var1, $var2) {
	/* the code here */
}

Then you can make a for-loop or something that generates the images in 
question by calling the function with the different values.


> As it is, the code gives the option of including each value into their respective parameters at once,
> but unfortunately creates an image for all possible pairs of values (600^2, I think).

Remove the foreach you don't need, just use the static value you need 
for that variable.


> I also get the following message if I exceed a 30 second loading time:
>
> "Fatal error: Maximum execution time of 30 seconds exceeded in /home/cogscinl/public_html/files/software/gabor/libgabor.php on line 69

This for your php.ini (my be in control of your web hosting company) 
limits the execution time to 30 seconds, if it takes longer, it will 
stop the execution of the script.

Scripts that executes a long time ain't meant as web pages, but cli 
script would be a better option, as you will not be limited in execution 
time.



> if (array_key_exists("generate", $_GET)) {
> 	$orient = $_GET["orient"];
> 	$size = $_GET["size"];
> 	$std = $_GET["std"];
> 	$env = $_GET["env"];
> 	$freq = $_GET["freq"];
> 	$phase = $_GET["phase"];
> 	$red0 = $_GET["red0"];
> 	$green0 = $_GET["green0"];
> 	$blue0 = $_GET["blue0"];
> 	$red1 = $_GET["red1"];
> 	$green1 = $_GET["green1"];
> 	$blue1 = $_GET["blue1"];
> 	$red2 = $_GET["red2"];
> 	$green2 = $_GET["green2"];
> 	$blue2 = $_GET["blue2"];


This is really bad and dangerous way of handling user input, you should 
ALWAYS validate the data before use.


-- 

  //Aho

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#14801

On Sunday, 4 January 2015 12:13:52 UTC-6, J.O. Aho  wrote:
> On 04/01/15 17:47, semeon.risom@gmail.com wrote:
> > Hello -
> >
> > Beginner at PHP. I'm attempting to run the piece of code (attached below) that will generate an image.
> > What I'm attempting to do is run the same piece of code 600 times to create 600 images.
> > The only change is two parameters labeled "orientation" and "frequency", which I have a list of values I'm hoping to feed into the code.
> 
> You need to make it into a function which takes the which takes all the 
> variables that can change as in parameters.
> 
> function generate_my_picture($var1, $var2) {
> 	/* the code here */
> }
> 
> Then you can make a for-loop or something that generates the images in 
> question by calling the function with the different values.
> 
> 
> > As it is, the code gives the option of including each value into their respective parameters at once,
> > but unfortunately creates an image for all possible pairs of values (600^2, I think).
> 
> Remove the foreach you don't need, just use the static value you need 
> for that variable.
> 
> 
> > I also get the following message if I exceed a 30 second loading time:
> >
> > "Fatal error: Maximum execution time of 30 seconds exceeded in /home/cogscinl/public_html/files/software/gabor/libgabor.php on line 69
> 
> This for your php.ini (my be in control of your web hosting company) 
> limits the execution time to 30 seconds, if it takes longer, it will 
> stop the execution of the script.
> 
> Scripts that executes a long time ain't meant as web pages, but cli 
> script would be a better option, as you will not be limited in execution 
> time.
> 
> 
> 
> > if (array_key_exists("generate", $_GET)) {
> > 	$orient = $_GET["orient"];
> > 	$size = $_GET["size"];
> > 	$std = $_GET["std"];
> > 	$env = $_GET["env"];
> > 	$freq = $_GET["freq"];
> > 	$phase = $_GET["phase"];
> > 	$red0 = $_GET["red0"];
> > 	$green0 = $_GET["green0"];
> > 	$blue0 = $_GET["blue0"];
> > 	$red1 = $_GET["red1"];
> > 	$green1 = $_GET["green1"];
> > 	$blue1 = $_GET["blue1"];
> > 	$red2 = $_GET["red2"];
> > 	$green2 = $_GET["green2"];
> > 	$blue2 = $_GET["blue2"];
> 
> 
> This is really bad and dangerous way of handling user input, you should 
> ALWAYS validate the data before use.
> 
> 
> -- 
> 
>   //Aho

Thank you!

- Semeon

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#14799

semeon.risom@gmail.com writes:

> Beginner at PHP. I'm attempting to run the piece of code (attached
> below) that will generate an image. What I'm attempting to do is run
> the same piece of code 600 times to create 600 images. The only change
> is two parameters labeled "orientation" and "frequency",

You mean "orient" and "freq" I think.

> which I have
> a list of values I'm hoping to feed into the code.
>
> As it is, the code gives the option of including each value into their
> respective parameters at once, but unfortunately creates an image for
> all possible pairs of values (600^2, I think).

Only if you have 600 different "orient" values and 600 different "freq"
values, and you ask the code to run them all at once.  You'd get 600
images if you had, for example, 24 orientations and 25 frequencies.

> I also get the following message if I exceed a 30 second loading time:
>
> "Fatal error: Maximum execution time of 30 seconds exceeded in
> /home/cogscinl/public_html/files/software/gabor/libgabor.php on line
> 69

This is a common limit for PHP (it's the default limit in fact).  You
might be able to change it, but that usually requires you to have some
sort of administrator rights.

> Any advice on a way to work this code to create the 600 images?

I'm not sure what the problem is.  For what different parameter values
do you want to generate images?

(At a guess, I think you really want all 600*600 images but because of
this time limit you want to generate them 600 at a time, but guessing is
a flawed method of giving advice.)

<snip>
-- 
Ben.

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#14800

On Sunday, 4 January 2015 14:58:10 UTC-6, Ben Bacarisse  wrote:
> semeon.risom@gmail.com writes:
> 
> > Beginner at PHP. I'm attempting to run the piece of code (attached
> > below) that will generate an image. What I'm attempting to do is run
> > the same piece of code 600 times to create 600 images. The only change
> > is two parameters labeled "orientation" and "frequency",
> 
> You mean "orient" and "freq" I think.
> 
> > which I have
> > a list of values I'm hoping to feed into the code.
> >
> > As it is, the code gives the option of including each value into their
> > respective parameters at once, but unfortunately creates an image for
> > all possible pairs of values (600^2, I think).
> 
> Only if you have 600 different "orient" values and 600 different "freq"
> values, and you ask the code to run them all at once.  You'd get 600
> images if you had, for example, 24 orientations and 25 frequencies.
> 
> > I also get the following message if I exceed a 30 second loading time:
> >
> > "Fatal error: Maximum execution time of 30 seconds exceeded in
> > /home/cogscinl/public_html/files/software/gabor/libgabor.php on line
> > 69
> 
> This is a common limit for PHP (it's the default limit in fact).  You
> might be able to change it, but that usually requires you to have some
> sort of administrator rights.
> 
> > Any advice on a way to work this code to create the 600 images?
> 
> I'm not sure what the problem is.  For what different parameter values
> do you want to generate images?
> 
> (At a guess, I think you really want all 600*600 images but because of
> this time limit you want to generate them 600 at a time, but guessing is
> a flawed method of giving advice.)
> 
> <snip>
> -- 
> Ben.

Yes, "orient" and "freq" are the parameters I'm referring to.

I have 600 images I am trying to generate. Each image has specific orientation and frequency values. Unfortunately, if I include all the values directly into the code, the code tries to generate all possible combinations. Generating past 100 images creates the Fatal Error mentioned.

Example:
Frequency
Image 1) 50
Image 2) 65
Image 3) 97
...

Orientation
Image 1) 65
Image 2) 45
Image 3) 66
...

What I want (Frequency, Orientation) 
Image 1) 50, 65
Image 2) 65, 45
Image 3) 97, 66
...

What's happening (Frequency, Orientation)
Image 1) 50, 65
Image 2) 50, 45
Image 3) 50, 66
Image 4) 65, 65 
Image 5) 65, 45
Image 6) 65, 66
Image 7) 97, 65 
Image 8) 97, 45
Image 9) 97, 66

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#14803

semeon.risom@gmail.com wrote:

> Example:
> Frequency
> Image 1) 50
> Image 2) 65
> Image 3) 97
> ...
> 
> Orientation
> Image 1) 65
> Image 2) 45
> Image 3) 66
> ...
> 
> What's happening (Frequency, Orientation)
> [9 "images"]

That is because you are nesting two loops, e.g.

  foreach (array(50, 65, 97) as $freq) {
    foreach (array(65, 45, 66) as $orient) {
      // do something with $freq and $orient here
    }
  }

> What I want (Frequency, Orientation) 
> [3 "images"]

Then you should use only one loop, e.g.

  $pairs = array(array(50, 65), array(65, 45), array(97, 66));
  foreach ($pairs as $pair) {
    list($freq, $orient) = explode($pair);
    // do something with $freq and $orient here
  }

-- 
Christoph M. Becker

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#14802

On 1/4/15 11:47 AM, semeon.risom@gmail.com wrote:
> Hello -
>
> Beginner at PHP. I'm attempting to run the piece of code (attached
> below) that will generate an image. What I'm attempting to do is run
> the same piece of code 600 times to create 600 images. The only
> change is two parameters labeled "orientation" and "frequency", which
> I have a list of values I'm hoping to feed into the code.
>
> As it is, the code gives the option of including each value into
> their respective parameters at once, but unfortunately creates an
> image for all possible pairs of values (600^2, I think). I also get
> the following message if I exceed a 30 second loading time:
>
> "Fatal error: Maximum execution time of 30 seconds exceeded in
> /home/cogscinl/public_html/files/software/gabor/libgabor.php on line
> 69
>
>
> Any advice on a way to work this code to create the 600 images?
>
> Thanks!
>
> - Semeon

While it depends a bit on the final application for the images, what
I've done in situations like this is make the script take as parameters 
in the URL the values (and validate them in the script) and the script 
generates a SINGLE image and sends it to the browser. The script could 
also write out the file for that image, and at its start, check if the 
file exist and just copy it to the output to save time.

For the page using those images just call the script as the image source 
(or check if the file exists, if so use the file, else the script to be 
more efficient).

You could also just make a page (or pages) that references all the 
scripts and run it once to generate the files.

This way, each script only needs to generate 1 file in the 30 seconds 
allocated to it.

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#14804

On Sun, 04 Jan 2015 08:47:05 -0800, semeon.risom wrote:

> Any advice on a way to work this code to create the 600 images?

1) the code doesn't have to run on someone elses web server. With a few 
mods you can run it on any machine that has php installed, and php 
command line versions are available for windows, linux and macos.

2) separate the core functionality of the program (which I guess is the 
code to create one image given a set of params) from the supporting code 
which determines the params for the image, outputs the image etc. Put 
this core code into a single function that takes a set of params and 
outputs an image object.

3) write your own code to loop through the relevant param settings, call 
the image creation function with relevant params, and then save the 
generated image object to a suitable image file.

4) debug.

5) look at your shiny images.

-- 
Denis McMahon, denismfmcmahon@gmail.com

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#14805

On Sun, 04 Jan 2015 22:22:45 +0000, Denis McMahon wrote:

> On Sun, 04 Jan 2015 08:47:05 -0800, semeon.risom wrote:
> 
>> Any advice on a way to work this code to create the 600 images?
> 
> 1) the code doesn't have to run on someone elses web server. With a few
> mods you can run it on any machine that has php installed, and php
> command line versions are available for windows, linux and macos.
> 
> 2) separate the core functionality of the program (which I guess is the
> code to create one image given a set of params) from the supporting code
> which determines the params for the image, outputs the image etc. Put
> this core code into a single function that takes a set of params and
> outputs an image object.
> 
> 3) write your own code to loop through the relevant param settings, call
> the image creation function with relevant params, and then save the
> generated image object to a suitable image file.
> 
> 4) debug.
> 
> 5) look at your shiny images.

In fact, on a machine with the right php installation (ie including 
imagemagick I think) and a copy of libgabor.php, the following code is 
all you need to generate your own gabor sets. Adjust parameters as 
required:

<?php

// libgabor.php can be found at
// https://github.com/smathot/gabor-patch-generator/blob/master/src/
libgabor.php
require("libgabor.php");

/**
    This wrapper defines the constant values to pass to the 
    generate_gabor function defined in libgabor.php.
    The variable values are handled in the for loops below.
**/
function make_gabor($orient, $freq, $outfile) {

    // The size of the patch in pixels.
    $size = 96;

    // The envelope, gaussian, linear, hann, hamming, circle,
    // or rectangle.
    $env = "gaussian";

    // The standard deviation of the envelope, in case it is
    // gaussian.
    $std = 12;

    // The phase of the patch.
    $phase = 0.0;

    // The background color as an RGB array.
    $color0 = array(128, 128, 128);

    // The first foreground color as an RGB array.
    $color1 = array(255, 255, 255);

    // The second foreground color as an RGB array.
    $color2 = array(0, 0, 0);

    generate_gabor($orient, $size, $env, $std, $freq, $phase,
                   $color0, $color1, $color2, $outfile);
}

for ($o = 30; $o < 61; $o += 5) // $orient values 30 .. 60
    for ($f = 0.2; $f < 0.9 $f += 0.2) { // $freq values 0.2 .. 0.8
        $fn = printf("gabor_patches/patch_%02d_%02d.png", $o, $f * 10);
        make_gabor($o, $f, $fn);
        }

You may need to create the subdir gabor_patches to save files in before 
running the program.

-- 
Denis McMahon, denismfmcmahon@gmail.com

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#14806

On Sun, 04 Jan 2015 23:10:39 +0000, Denis McMahon wrote:

Two corrections are needed to this code:

> for ($o = 30; $o < 61; $o += 5) // $orient values 30 .. 60
>     for ($f = 0.2; $f < 0.9 $f += 0.2) { // $freq values 0.2 .. 0.8
.............................^

insert ";" character

>         $fn = printf("gabor_patches/patch_%02d_%02d.png", $o, $f * 10);
................^^^^^^

sprintf

>         make_gabor($o, $f, $fn);
>         }

-- 
Denis McMahon, denismfmcmahon@gmail.com

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#14809

On Sunday, 4 January 2015 17:15:08 UTC-6, Denis McMahon  wrote:
> On Sun, 04 Jan 2015 23:10:39 +0000, Denis McMahon wrote:
> 
> Two corrections are needed to this code:
> 
> > for ($o = 30; $o < 61; $o += 5) // $orient values 30 .. 60
> >     for ($f = 0.2; $f < 0.9 $f += 0.2) { // $freq values 0.2 .. 0.8
> .............................^
> 
> insert ";" character
> 
> >         $fn = printf("gabor_patches/patch_%02d_%02d.png", $o, $f * 10);
> ................^^^^^^
> 
> sprintf
> 
> >         make_gabor($o, $f, $fn);
> >         }
> 
> -- 
> Denis McMahon, denismfmcmahon@gmail.com

Sorry for the pestering questions, but if I wanted to paste the values into the syntax, would they be included like the example below? 

Note: I'm using Notepad++ to edit the syntax.

Example: orient values: 30 28 42 98; freq values .30 .38 .37 .41
.......
.......
for ($o = 30 28 42 98; $o; < 61; $o += 5) // $orient values 30 .. 60
    for ($f = 0.2; $f; < 0.9 $f += 0.2) { // $freq values 0.2 .. 0.8 
        $fn = sprintf("gabor_patches/patch_%02d_%02d.png", $o, $f * 10); 
        make_gabor($o, $f, $fn); 

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#14810

On Monday, 5 January 2015 14:47:55 UTC-6, semeon...@gmail.com  wrote:
> On Sunday, 4 January 2015 17:15:08 UTC-6, Denis McMahon  wrote:
> > On Sun, 04 Jan 2015 23:10:39 +0000, Denis McMahon wrote:
> > 
> > Two corrections are needed to this code:
> > 
> > > for ($o = 30; $o < 61; $o += 5) // $orient values 30 .. 60
> > >     for ($f = 0.2; $f < 0.9 $f += 0.2) { // $freq values 0.2 .. 0.8
> > .............................^
> > 
> > insert ";" character
> > 
> > >         $fn = printf("gabor_patches/patch_%02d_%02d.png", $o, $f * 10);
> > ................^^^^^^
> > 
> > sprintf
> > 
> > >         make_gabor($o, $f, $fn);
> > >         }
> > 
> > -- 
> > Denis McMahon, denismfmcmahon@gmail.com
> 
> Sorry for the pestering questions, but if I wanted to paste the values into the syntax, would they be included like the example below? 
> 
> Note: I'm using Notepad++ to edit the syntax.
> 
> Example: orient values: 30 28 42 98; freq values .30 .38 .37 .41
> .......
> .......
> for ($o = 30 28 42 98; $o; < 61; $o += 5) // $orient values 30 .. 60
>     for ($f = 0.2; $f; < 0.9 $f += 0.2) { // $freq values 0.2 .. 0.8 
>         $fn = sprintf("gabor_patches/patch_%02d_%02d.png", $o, $f * 10); 
>         make_gabor($o, $f, $fn);

Unfortunately, I'm getting the error below after replacing the original gabor.php file with the syntax you provided.

Parse error: syntax error, unexpected 'require' (T_REQUIRE) in C:\xampp\htdocs\amit\gabor-patch-generator\src\gabor.php on line 6

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#14812

On Mon, 05 Jan 2015 12:50:26 -0800, semeon.risom wrote:

> Unfortunately, I'm getting the error below after replacing the original
> gabor.php file with the syntax you provided.
> 
> Parse error: syntax error, unexpected 'require' (T_REQUIRE) in
> C:\xampp\htdocs\amit\gabor-patch-generator\src\gabor.php on line 6

Yes, this is an issue caused by line wrapping in usenet.

I would have hoped that you would have sufficient php skill to realise 
that in the file, the url for the gabor library ends with the filename, 
and in the next line, the require statement is on it's own.

ie:

The code that wrapped like this:

------------------------------------------------------
<?php

// libgabor.php can be found at //
https://github.com/smathot/gabor-patch-generator/blob/master/src/
libgabor.php require("libgabor.php");
------------------------------------------------------

should be in the file like this:

------------------------------------------------------
<?php

// libgabor.php can be found at
// https://github.com/smathot/ ... /src/libgabor.php
require("libgabor.php");
------------------------------------------------------

(which I hope has now wrapped correctly)

As an alternative, replace it with:

------------------------------------------------------
<?php

/******
   libgabor.php can be found at 
   https://github.com/smathot/gabor-patch-generator/blob/master/src/
libgabor.php
******/
require("libgabor.php");
------------------------------------------------------

If you still don't understand what bit is the comment text and what bit 
is the statement, perhaps you need to find a very basic introduction to 
php tutorial.

The one at 

http://devzone.zend.com/6/php-101-php-for-the-absolute-beginner/

should be reasonable, you may wish to ignore web specific html etc bits.

Please DO NOT under any circumstances follow w3schools tutorials, they 
are frequently inaccurate and flawed.

-- 
Denis McMahon, denismfmcmahon@gmail.com

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#14813

On Tue, 06 Jan 2015 00:42:37 +0000, Denis McMahon wrote:

> should be in the file like this:
> 
> ------------------------------------------------------
> <?php
> 
> // libgabor.php can be found at // https://github.com/smathot/ ...
> /src/libgabor.php require("libgabor.php");
> ------------------------------------------------------
> 
> (which I hope has now wrapped correctly)

It didn't! Here it is again with extra blank lines:

------------------------------------------------------

<?php

// libgabor.php can be found at 

// https://github.com/smathot/ ... /src/libgabor.php 

require("libgabor.php");

------------------------------------------------------

-- 
Denis McMahon, denismfmcmahon@gmail.com

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#14811

On Mon, 05 Jan 2015 12:47:45 -0800, semeon.risom wrote:

> On Sunday, 4 January 2015 17:15:08 UTC-6, Denis McMahon  wrote:
>> On Sun, 04 Jan 2015 23:10:39 +0000, Denis McMahon wrote:
>> 
>> Two corrections are needed to this code:
>> 
>> > for ($o = 30; $o < 61; $o += 5) // $orient values 30 .. 60
>> >     for ($f = 0.2; $f < 0.9 $f += 0.2) { // $freq values 0.2 .. 0.8
>> .............................^
>> 
>> insert ";" character
>> 
>> >         $fn = printf("gabor_patches/patch_%02d_%02d.png", $o, $f *
>> >         10);
>> ................^^^^^^
>> 
>> sprintf
>> 
>> >         make_gabor($o, $f, $fn);
>> >         }
>> 
>> --
>> Denis McMahon, denismfmcmahon@gmail.com
> 
> Sorry for the pestering questions, but if I wanted to paste the values
> into the syntax, would they be included like the example below?
> 
> Note: I'm using Notepad++ to edit the syntax.
> 
> Example: orient values: 30 28 42 98; freq values .30 .38 .37 .41 .......
> .......
> for ($o = 30 28 42 98; $o; < 61; $o += 5) // $orient values 30 .. 60
>     for ($f = 0.2; $f; < 0.9 $f += 0.2) { // $freq values 0.2 .. 0.8
>         $fn = sprintf("gabor_patches/patch_%02d_%02d.png", $o, $f * 10);
>         make_gabor($o, $f, $fn);

No, the way I wrote the for loops is to step through a range of values in 
a given increment.

If you want a non linear range, I suggest you create an array of values 
and use a foreach loop to step through the array. Note that in this 
example I'm also using 3 digit orient and freq in the file names, and 
I've reduced the code inside the loop to a single statement (that will 
wrap because of usenet limitations).

example:

$orients = array(30, 28, 42, 98); // all the orient vals
$freqs = array(.30, .38, .37, .41); // all the freq vals
foreach ($orients as $o)
    foreach ($freqs as $f)
        make_gabor($o, $f, sprintf("gabor_patches/patch_%03d_%03d.png", 
$o, $f * 100));

-- 
Denis McMahon, denismfmcmahon@gmail.com

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