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Re: Bar plotting in IDL [message #87267 is a reply to message #87263]

Wed, 22 January 2014 07:30

Matthew Argall
Messages: 286
Registered: October 2011

Senior Member

> cgBarPlot,ydata,BARCOORDS=xnos,XStyle=1, $
> XTitle=xtitle4,YTitle=ytitle4,Font=-1, $
> YRange=[0,100],XRange=[0,100], $
> colors=['cornflower blue'],/Overplot

> (1) CGAXIS -> Keyword array parameter XTICKNAME must have from 1 to 60 elements.

The BARCOORDS keyword is the value or name of each bar on your barplot. The bars are labelled with the XTICKNAME to cgAxis. IDL only allows up to 60 tick names while your "xnos" variable has more than 60 elements. Try picking a smaller subset of your data so that data points are binned into the bars. Otherwise each bar will have exactly 1 data point in it.

(also, try xnos = indgen(100)+1)

> (2) I get the figure with bars but I don't see my xnos or x-axis labels are matching with my xnos. For example, the last value of ydata is 90 and the bar for this value is shown at an xnos=94.

I expect that fixing the first issue will fix this one too.

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[Message index]

		Bar plotting in IDL By: atmospheric physics on Wed, 22 January 2014 06:57
		Re: Bar plotting in IDL By: Matthew Argall on Wed, 22 January 2014 07:30
		Re: Bar plotting in IDL By: David Fanning on Wed, 22 January 2014 07:33
		Re: Bar plotting in IDL By: atmospheric physics on Wed, 22 January 2014 07:46
		Re: Bar plotting in IDL By: David Fanning on Wed, 22 January 2014 07:55
		Re: Bar plotting in IDL By: atmospheric physics on Wed, 22 January 2014 07:58
		Re: Bar plotting in IDL By: Phillip Bitzer on Wed, 22 January 2014 08:13
		Re: Bar plotting in IDL By: atmospheric physics on Thu, 23 January 2014 01:07

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