comp.lang.idl-pvwave archive: archive » Multiple axes and plots with NG

Home » Public Forums » archive » Multiple axes and plots with NG

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: Multiple axes and plots with NG [message #87164 is a reply to message #87161]

Mon, 13 January 2014 07:16

chris_torrence@NOSPAM is currently offline

chris_torrence@NOSPAM
Messages: 528
Registered: March 2007

Senior Member

On Monday, January 13, 2014 6:52:08 AM UTC-7, Matthew Argall wrote:
>> Well, first of all, your final plot looks really nice. [...] By definition, once a plot is created, then all other plots that go on top of it (using say /overplot) must share the same "data space". In other words, they are all assumed to have the same data units. [...]
>
>
>
> Great! Thanks! I had an idea of what /Overplot does, but it is good to know for sure. Could you clarify what TARGET does, too?
>
>
>
> In the following example, "theAxis" can have a different range from "thePlot", but they share the same scale, so "theAxis" does not become completely visible until I expand the axis range of "thePlot". I suppose if I wanted the axes to be the same length and have different scales, I would have to use the Coord_Transform keyword, right? (any chance of getting an exponential transform for linear/log-scaled axes?)...
>
>
>
> thePlot = Plot(/Test)
>
> theAxis = Axis('Y', LOCATION=[200, -1], Axis_Range=[-2,2], Color='Blue', TextPos=1, Target=thePlot)
>
> thePlot.XRange = [-5,5]

Hi Matthew,

Yes, the TARGET just says that this axis "belongs" to this dataspace, and should share the same range as that dataspace. So, you are correct, in your example, that axis is going to have a "range" of the original plot (probably [-1,1]), regardless of what you put in for the axis_range. The axis_range is really only useful for creating an axis that only extends partway. For example:
thePlot = Plot(/Test)
theAxis = Axis('Y', LOCATION=[200, -1], Axis_Range=[0,1], Color='Blue', TextPos=1, Target=thePlot)

I'd have to think carefully about the exponential transform. I'm not sure what that would mean for the actual data scaling within the dataspace. It's supposed to be tied 1-1 with the axis.

-Chris

Report message to a moderator

[Message index]

		Multiple axes and plots with NG By: Matthew Argall on Sat, 11 January 2014 11:17
		Re: Multiple axes and plots with NG By: chris_torrence@NOSPAM on Sun, 12 January 2014 19:20
		Re: Multiple axes and plots with NG By: Matthew Argall on Mon, 13 January 2014 05:52
		Re: Multiple axes and plots with NG By: chris_torrence@NOSPAM on Mon, 13 January 2014 07:16
		Re: Multiple axes and plots with NG By: Matthew Argall on Mon, 13 January 2014 08:43
		Re: Multiple axes and plots with NG By: Gompie on Mon, 13 January 2014 19:05
		Re: Multiple axes and plots with NG By: Matthew Argall on Tue, 14 January 2014 12:11

Previous Topic:	Mann-Kendall test. Here
Next Topic:	Why are you still here?

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Wed Oct 08 18:12:24 PDT 2025

Total time taken to generate the page: 0.00435 seconds