Procedure Display matrix columns on graph

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Hi All,

I think this should be pretty straight forward. I'm making a procedure such that I can plot all the columns of a matrix as traces on a graph. Essentially treating the columns as 1D waves.

This is what I've got so far.


Function PlotMatrixColumn(matrix, 1Dxwave)
	wave matrix
	wave 1Dxwave
	
	Variable nCols = DimSize(matrix, 1)
	Variable i 
	for (i = 0; i < nCols; i += 1)
		Display /W=(454.5,315.5,849,524) matrix[*][i] vs wnum
	endfor

	// Graph formatting
        ModifyGraph mirror=2
	ModifyGraph fStyle=1
	ModifyGraph axThick=1.5
	Label left "\\Y label"
	Label bottom "\\xlabel (cm\\S-1\\M)"
	
End


I was hoping I could loop and call each wave as matrix[*][1] but when i tested the procedure it only plotted the 0th column.
Hopefully what i'm trying to do is clear.
As you guys on IGOR are generally fantastic at solving my problems while teaching me new things I thought I'd save time and ask you guys! =)

Thanks,
N
sorry wnum = 1Dxwave I was trying to make my original code a little more transparent!

and to clarify I would like all the traces displayed on one graph

August 25, 2015 at 07:11 am - Permalink
You don't need the [*]. Go for 
Display matrix[][i] vs wnum

Since you need everything on one graph. You need to do it a bit differently.


Function PlotMatrixColumn(matrix, 1Dxwave)
	wave matrix
	wave 1Dxwave
 
	Variable nCols = DimSize(matrix, 1)
	Variable i 

	//set up graph window	
	DoWindow /K allPlot	//kill it if it exists
	Display /N=allPlot

	for (i = 0; i < nCols; i += 1)
		AppendToGraph /W=allPlot matrix[][i] vs wnum
	endfor
 
	// Graph formatting
        ModifyGraph mirror=2
	ModifyGraph fStyle=1
	ModifyGraph axThick=1.5
	Label left "\\Y label"
	Label bottom "\\xlabel (cm\\S-1\\M)"
 
End


That should work. To resize your window to 454.5,315.5. etc. do that after the loop with your other stuff.

August 25, 2015 at 07:26 am - Permalink
something like this?


Function PlotMatrixColumn(matrix, xWave)
	wave matrix
	wave xWave
 
	Variable nCols = DimSize(matrix, 1)
	Variable i 
	for (i = 0; i < nCols; i += 1)
		
		DoWindow MatrixGraph
		if (!V_flag)
			Display/K=1 /W=(454.5,315.5,849,524)/N=MatrixGraph  matrix[][i] vs xWave
		else
			AppendToGraph 	/W= MatrixGraph matrix[][i] vs xWave
		endif
		
	endfor
	
	// Graph formatting
       ModifyGraph mirror=2
	ModifyGraph fStyle=1
	ModifyGraph axThick=1.5
	Label left "\\Y label"
	Label bottom "\\xlabel (cm\\S-1\\M)"
	
End

August 25, 2015 at 07:27 am - Permalink
Thanks sjr51 and ChrLie,

That did the trick! And it the code was more simpler/efficient that I thought it would be. =)

Hopefully others will find it helpful also.

Best wishes,
N

August 25, 2015 at 07:51 am - Permalink
It seems to me that what you are describing might also be displayed in one graph as a Waterfall plot, a "sequence of traces in a perspective view".

DisplayHelpTopic "Waterfall Plots"

I quote from the NewWaterfall command help:

The NewWaterfall operation creates a new waterfall plot window or subwindow 
using each column in the 2D matrix wave, mwave, as a waterfall trace.

You can manually set x and z scaling by specifying wavex  and wavez  to override
the default scalings. Either wavex  or wavez  may be omitted by using a *.

August 25, 2015 at 08:21 am - Permalink
Thanks for the input s.r.chinn,

I was using waterfall plots to illustrate my data, but unfortunately it made reading the Y axis quite unclear so I wanted to mass make the 90deg view that had a convenient legend next to it.

Impressed you could read through what I was trying to achieve!!!

Thanks,
N

August 25, 2015 at 09:28 am - Permalink