Re: [Matplotlib-users] keeping zoom...
fred a écrit : I get anoter issue now. How can I know if the displayed image has been zoomed or not (I mean not on testing xlim & ylim) ? TIA -- http://scipy.org/FredericPetit - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] keeping zoom...
fred a écrit : > Sorry for the noise. Thanks anyway, Jouni, I fixed my issue thanks to you ;-) You showed me that the get_?lim methods were right, so I followed my feeling further. Cheers, -- http://scipy.org/FredericPetit - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] keeping zoom...
fred a écrit : > Maybe I'm doing something wrong ? Yes :-) You only need to set extent to the const xmin/xmax & ymin/ymax and not those you get with get_xlim & get_ylim. Sorry for the noise. Cheers, -- http://scipy.org/FredericPetit - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] keeping zoom...
Jouni K. Seppänen a écrit :
> Try:
>
> imshow(rand(50,50))
> # zoom with mouse
> xlim=getp(gca(), 'xlim'); ylim = getp(gca(), 'ylim')
> imshow(rand(50,50))
> setp(gca(), 'xlim', xlim); setp(gca(), 'ylim', ylim)
>
Well..., I forgot to mention something, sorry ;-)
I already apply this trick: I use get_{x,y}lim and set_{x,y}lim.
Which works almost fine.
In fact, I use a grid, which is defined by xmin, xmax, dx & ymin, ymax, dy.
I don't want do display on the axes the number of points, but the real world
axis dimension.
If xmin=ymin=0 and xmax=ymax=500 with dx=dy=1,
the trick does work fine.
Now, if I set xmax=ymax=1000 but dx=dy=2 (so I have the same number of
points)
I have to use imshow extent option, because of the use of _xlim & _ylim.
Please see http://fredantispam.free.fr/a.png without extent option,
http://fredantispam.free.fr/b.png with extent option.
But in this case, after zoomed,
see http://fredantispam.free.fr/c.png
the trick does not work anymore: x & y limits are right,
but the whole data is displayed by imshow.
see http://fredantispam.free.fr/d.png.
Maybe I'm doing something wrong ?
TIA.
Cheers,
--
http://scipy.org/FredericPetit
-
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Re: [Matplotlib-users] keeping zoom...
fred <[EMAIL PROTECTED]> writes: > imshow(rand(50,50)) > then zoom with the mouse and redo > imshow(rand(50,50)) > the zoom factor is not kept, ie xrange/yrange are still (0,50). > > How can I keep the zoom factor ? Try: imshow(rand(50,50)) # zoom with mouse xlim=getp(gca(), 'xlim'); ylim = getp(gca(), 'ylim') imshow(rand(50,50)) setp(gca(), 'xlim', xlim); setp(gca(), 'ylim', ylim) -- Jouni K. Seppänen http://www.iki.fi/jks - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
[Matplotlib-users] keeping zoom...
Hi, I want to keep the image zoomed to the same factor for all my images. If I try ipython -pylab imshow(rand(50,50)) then zoom with the mouse and redo imshow(rand(50,50)) the zoom factor is not kept, ie xrange/yrange are still (0,50). How can I keep the zoom factor ? TIA. Cheers, -- http://scipy.org/FredericPetit - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
