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Groups > comp.graphics.apps.gnuplot > #1332

Re: Changing x-axis plot from right to left to left to right

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On Tuesday, August 14, 2012 6:12:33 PM UTC+1, Hans-Bernhard Bröker wrote:
> On 14.08.2012 17:52, Jamie Rees wrote:
> 
> 
> 
> > For mathematical reasons, I need to change the way that gnuplots my
> 
> > data along the X axis from right to left to left to right (that is,
> 
> > at the minute it plots from 20 down to 1, not from 1 to 20)
> 
> 
> 
> That makes no sense whatsoever.  gnuplot generates some kind of picture. 
> 
>   It makes absolutely no difference whatsoever whether a line was drawn 
> 
> from left to right or right to left --- it'll be the same line in the 
> 
> end, consisisting of exactly the same pixels being coloured.
> 
> 
> 
> So since this doesn't make sense, maybe you should tell us what your 
> 
> actual problem is, so we can find out how that might be solved.

I'm using gnuplot in conjunction with a dotNet application which has a SQL Server backend. I am plotting data stored on the SQL Server.

I need to be able to manipulate the data being plotted on the graph. I need to be able to draw a line which steps down from left to right,  when the data may include peaks and troughs which would otherwise mean the graph would go up and down. 

I've worked out that I can do this is I check to see whether if the previous next value along is higher than the previous, and if it is, assume the value of the previous and then plot a straight line. 

Make much sense?
Thanks

Jamie

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Changing x-axis plot from right to left to left to right Jamie Rees <jamierees@gmail.com> - 2012-08-14 08:52 -0700
  Re: Changing x-axis plot from right to left to left to right Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2012-08-14 19:12 +0200
    Re: Changing x-axis plot from right to left to left to right Jamie Rees <jamierees@gmail.com> - 2012-08-16 08:33 -0700
      Re: Changing x-axis plot from right to left to left to right Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2012-08-16 22:17 +0200
      Re: Changing x-axis plot from right to left to left to right sfeam <sfeam@users.sourceforge.net> - 2012-08-16 14:01 -0700
        Re: Changing x-axis plot from right to left to left to right Jamie Rees <jamierees@gmail.com> - 2012-09-07 02:42 -0700

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