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QTableWidget updating columns in a single row

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  QTableWidget updating columns in a single row Sara Lochtie <sara.lochtie@gmail.com> - 2013-04-23 23:22 -0700
    Re: QTableWidget updating columns in a single row Chris “Kwpolska” Warrick <kwpolska@gmail.com> - 2013-04-24 09:58 +0200
    Re: QTableWidget updating columns in a single row Sara Lochtie <sara.lochtie@gmail.com> - 2013-04-24 10:12 -0700
      Re: QTableWidget updating columns in a single row Chris “Kwpolska” Warrick <kwpolska@gmail.com> - 2013-04-24 19:57 +0200
      Re: QTableWidget updating columns in a single row Vincent Vande Vyvre <vincent.vandevyvre@swing.be> - 2013-04-24 20:51 +0200
        Re: QTableWidget updating columns in a single row Sara Lochtie <sara.lochtie@gmail.com> - 2013-04-26 12:14 -0700

#44246 — QTableWidget updating columns in a single row

I have written a GUI that gets data sent to it in real time and this data is displayed in a table. Every time data is sent in it is displayed in the table in a new row. My problem is that I would like to have the data just replace the old in the first row.

The table has 6 columns (A, B, C, D, E, F) I want the new data to continue replacing the old data in the same row unless the data that goes under column A changes, at which point a new row would be added.

Does anyone have tips on how to approach this? I can post a portion of my code to get a better idea of what I have done.

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#44249

On Wed, Apr 24, 2013 at 8:22 AM, Sara Lochtie <sara.lochtie@gmail.com> wrote:
> I have written a GUI that gets data sent to it in real time and this data is displayed in a table. Every time data is sent in it is displayed in the table in a new row. My problem is that I would like to have the data just replace the old in the first row.
>
> The table has 6 columns (A, B, C, D, E, F) I want the new data to continue replacing the old data in the same row unless the data that goes under column A changes, at which point a new row would be added.
>
> Does anyone have tips on how to approach this? I can post a portion of my code to get a better idea of what I have done.
>
>
> --
> http://mail.python.org/mailman/listinfo/python-list

My suggestion: compare the new data’s column A with the existing data
(store a copy of the old data somewhere?).  If it differs, add a new
row; if it doesn’t, change an existing one.  If you need help with the
exact implementation, show the *entire* code.

--
Kwpolska <http://kwpolska.tk> | GPG KEY: 5EAAEA16
stop html mail                | always bottom-post
http://asciiribbon.org        | http://caliburn.nl/topposting.html

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#44273

On Tuesday, April 23, 2013 11:22:29 PM UTC-7, Sara Lochtie wrote:
> I have written a GUI that gets data sent to it in real time and this data is displayed in a table. Every time data is sent in it is displayed in the table in a new row. My problem is that I would like to have the data just replace the old in the first row.
> 
> 
> 
> The table has 6 columns (A, B, C, D, E, F) I want the new data to continue replacing the old data in the same row unless the data that goes under column A changes, at which point a new row would be added.
> 
> 
> 
> Does anyone have tips on how to approach this? I can post a portion of my code to get a better idea of what I have done.

So that is where I am stuck. I don't how to compare them and I am trying to avoiding saving the data to a file.  

This is the code that I have:





if msg.arg2() != ERROR:
 		    	entry = (A, B, C, D, E, F)	   
		    	self.data.append(entry) 
		    
        data = self.data                                                 
    
        # Display how many runs occurred
        self.statusBar().showMessage('Data read. %s Run(s) Occurred.' % self.runCount)
        
        # Populates table by adding only new entries to the end of the table
        lastRow = self.table.rowCount()
        self.table.setRowCount(len(data))
        for entryPos in range(lastRow, len(data)):         
            for fieldPos in range(6):                                       
                item = QtGui.QTableWidgetItem(str(data[entryPos][fieldPos]))
                self.table.setItem(entryPos, fieldPos, item)
        self.table.resizeColumnsToContents()
        self.table.horizontalHeader().setStretchLastSection(True)    	           
        self.currentRunLabel.setText('Current Run: ' + str(self.runCount))
        self.currentLineLabel.setText('Number of lines: ' + str(len(self.data)))
		print('End of %s. run:    %s. entries found' % (self.runCount, len(self.data)))

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#44281

On Wed, Apr 24, 2013 at 7:12 PM, Sara Lochtie <sara.lochtie@gmail.com> wrote:
> So that is where I am stuck. I don't how to compare them and I am trying to avoiding saving the data to a file.

To a file?  Just store it in a class attribute and you will be fine.
You have it in self.data already.  Unless that structure doesn’t work,
then “mirror” your table in a Python array.  (alternatively, you could
query QTableWidgetItem.text() for every existing item, but that’s
crazy.)

--
Kwpolska <http://kwpolska.tk> | GPG KEY: 5EAAEA16
stop html mail                | always bottom-post
http://asciiribbon.org        | http://caliburn.nl/topposting.html

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#44283

Le 24/04/2013 19:12, Sara Lochtie a écrit :
> On Tuesday, April 23, 2013 11:22:29 PM UTC-7, Sara Lochtie wrote:
>> I have written a GUI that gets data sent to it in real time and this data is displayed in a table. Every time data is sent in it is displayed in the table in a new row. My problem is that I would like to have the data just replace the old in the first row.
>>
>>
>>
>> The table has 6 columns (A, B, C, D, E, F) I want the new data to continue replacing the old data in the same row unless the data that goes under column A changes, at which point a new row would be added.
>>
>>
>>
>> Does anyone have tips on how to approach this? I can post a portion of my code to get a better idea of what I have done.
> So that is where I am stuck. I don't how to compare them and I am trying to avoiding saving the data to a file.
>
> This is the code that I have:
>
>
>
>
>
> if msg.arg2() != ERROR:
>   		    	entry = (A, B, C, D, E, F)	
> 		    	self.data.append(entry)
> 		
>          data = self.data
>      
>          # Display how many runs occurred
>          self.statusBar().showMessage('Data read. %s Run(s) Occurred.' % self.runCount)
>          
>          # Populates table by adding only new entries to the end of the table
>          lastRow = self.table.rowCount()
>          self.table.setRowCount(len(data))
>          for entryPos in range(lastRow, len(data)):
>              for fieldPos in range(6):
>                  item = QtGui.QTableWidgetItem(str(data[entryPos][fieldPos]))
>                  self.table.setItem(entryPos, fieldPos, item)
>          self.table.resizeColumnsToContents()
>          self.table.horizontalHeader().setStretchLastSection(True)    	
>          self.currentRunLabel.setText('Current Run: ' + str(self.runCount))
>          self.currentLineLabel.setText('Number of lines: ' + str(len(self.data)))
> 		print('End of %s. run:    %s. entries found' % (self.runCount, len(self.data)))
As sayed by Chris "Kwpolska", you can compare the new data with the data 
of the first row.

Something like that:

  # Get the content of row 0, column A
first = str(self.table.item(0, 0).text())

for entryPos in range(lastRow, len(data)):
     if str(data[entryPos][0]) == first:
         self.update_first_row(data[entryPos])

     else:
         self.add_new_row(data[entryPos])
-- 
Vincent V.V.
Oqapy <https://launchpad.net/oqapy> . Qarte 
<https://launchpad.net/qarte> . PaQager <https://launchpad.net/paqager>

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#44424

On Wednesday, April 24, 2013 11:51:04 AM UTC-7, Vincent Vande Vyvre wrote:
Thanks. I think I should be able to figure out from here. I appreciate all of the help!



> Le 24/04/2013 19:12, Sara Lochtie a écrit :
> 
> > On Tuesday, April 23, 2013 11:22:29 PM UTC-7, Sara Lochtie wrote:
> 
> >> I have written a GUI that gets data sent to it in real time and this data is displayed in a table. Every time data is sent in it is displayed in the table in a new row. My problem is that I would like to have the data just replace the old in the first row.
> 
> >>
> 
> >>
> 
> >>
> 
> >> The table has 6 columns (A, B, C, D, E, F) I want the new data to continue replacing the old data in the same row unless the data that goes under column A changes, at which point a new row would be added.
> 
> >>
> 
> >>
> 
> >>
> 
> >> Does anyone have tips on how to approach this? I can post a portion of my code to get a better idea of what I have done.
> 
> > So that is where I am stuck. I don't how to compare them and I am trying to avoiding saving the data to a file.
> 
> >
> 
> > This is the code that I have:
> 
> >
> 
> >
> 
> >
> 
> >
> 
> >
> 
> > if msg.arg2() != ERROR:
> 
> >   		    	entry = (A, B, C, D, E, F)	
> 
> > 		    	self.data.append(entry)
> 
> > 		
> 
> >          data = self.data
> 
> >      
> 
> >          # Display how many runs occurred
> 
> >          self.statusBar().showMessage('Data read. %s Run(s) Occurred.' % self.runCount)
> 
> >          
> 
> >          # Populates table by adding only new entries to the end of the table
> 
> >          lastRow = self.table.rowCount()
> 
> >          self.table.setRowCount(len(data))
> 
> >          for entryPos in range(lastRow, len(data)):
> 
> >              for fieldPos in range(6):
> 
> >                  item = QtGui.QTableWidgetItem(str(data[entryPos][fieldPos]))
> 
> >                  self.table.setItem(entryPos, fieldPos, item)
> 
> >          self.table.resizeColumnsToContents()
> 
> >          self.table.horizontalHeader().setStretchLastSection(True)    	
> 
> >          self.currentRunLabel.setText('Current Run: ' + str(self.runCount))
> 
> >          self.currentLineLabel.setText('Number of lines: ' + str(len(self.data)))
> 
> > 		print('End of %s. run:    %s. entries found' % (self.runCount, len(self.data)))
> 
> As sayed by Chris "Kwpolska", you can compare the new data with the data 
> 
> of the first row.
> 
> 
> 
> Something like that:
> 
> 
> 
>   # Get the content of row 0, column A
> 
> first = str(self.table.item(0, 0).text())
> 
> 
> 
> for entryPos in range(lastRow, len(data)):
> 
>      if str(data[entryPos][0]) == first:
> 
>          self.update_first_row(data[entryPos])
> 
> 
> 
>      else:
> 
>          self.add_new_row(data[entryPos])
> 
> -- 
> 
> Vincent V.V.
> 
> Oqapy <https://launchpad.net/oqapy> . Qarte 
> 
> <https://launchpad.net/qarte> . PaQager <https://launchpad.net/paqager>

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