Re: [matplotlib-devel] imshow with PS backend

2006-08-01 Thread JIM MacDonald
> There are two kinds of images in matplotlib -- AxesImage and > FigureImage. By definition, the AxesImage is interpolated to fit into > the Axes box. You can control the aspect ratio of the interpolation, > but it will be interpolated. FigureImage, on the other hand, performs > a pixel dump to

Re: [matplotlib-devel] imshow with PS backend

2006-07-31 Thread John Hunter
> "JIM" == JIM MacDonald <[EMAIL PROTECTED]> writes: JIM> My second problem involved the resolutions of the image. I'd JIM> like to preserve the resolution of my image in the PS output, JIM> but I can't figure out how to stop the image being resized JIM> and interpolated. Obv

Re: [matplotlib-devel] imshow with PS backend

2006-07-31 Thread JIM MacDonald
> I don't think this is a problem with the postscript backend. You're rescaling > the image in your script. Try something like this: > > from pylab import * > > rc('text', usetex=True) > rc('ps', usedistiller="xpdf") > > figure(1,figsize=(6, 4)) > im=imread('image.png') > imshow(im,interpolation='n

Re: [matplotlib-devel] imshow with PS backend

2006-07-31 Thread JIM MacDonald
> Would you post an example where the ps2pdf flags make a big difference on the > output? I just tried with the above png, but I cant tell the difference > between the results with/without the new flags. http://jimmacdonald.co.uk/matplotlib/MPD_SinPulse_g0.500.png JIM ---

Re: [matplotlib-devel] imshow with PS backend

2006-07-31 Thread Gael Varoquaux
On Mon, Jul 31, 2006 at 10:19:46AM -0400, Darren Dale wrote: > I see. Thanks for pointing this out and providing the solution. The flags you > suggested are passed to ps2pdf as of svn 2639. Great ! Thanks. I like open source software so much because of these little details :->. --

Re: [matplotlib-devel] imshow with PS backend

2006-07-31 Thread Darren Dale
On Monday 31 July 2006 10:05, Gael Varoquaux wrote: > On Mon, Jul 31, 2006 at 10:01:23AM -0400, Darren Dale wrote: > > Would you post an example where the ps2pdf flags make a big difference on > > the output? I just tried with the above png, but I cant tell the > > difference between the results wi

Re: [matplotlib-devel] imshow with PS backend

2006-07-31 Thread Gael Varoquaux
On Mon, Jul 31, 2006 at 10:01:23AM -0400, Darren Dale wrote: > Would you post an example where the ps2pdf flags make a big difference on the > output? I just tried with the above png, but I cant tell the difference > between the results with/without the new flags. Last image of http://scipy.org/

Re: [matplotlib-devel] imshow with PS backend

2006-07-31 Thread Darren Dale
On Monday 31 July 2006 09:32, JIM MacDonald wrote: > > I'll look into this soon. I'm hesitant to add another rc option, maybe we > > can consider using these settings as the defaults. I'll post again after > > I have had a chance to play with it. > > Defaulting to lossless FlateEncode compression s

Re: [matplotlib-devel] imshow with PS backend

2006-07-31 Thread Darren Dale
On Monday 31 July 2006 09:32, JIM MacDonald wrote: > > The resolution for Postscript is 72 dpi, and I'm not sure this can be > > changed. Would you send me an example postscript file along with the > > original png? > > Sure, > http://jimmacdonald.co.uk/matplotlib/image.png > http://jimmacdonald.co

Re: [matplotlib-devel] imshow with PS backend

2006-07-31 Thread JIM MacDonald
> I'll look into this soon. I'm hesitant to add another rc option, maybe we can > consider using these settings as the defaults. I'll post again after I have > had a chance to play with it. Defaulting to lossless FlateEncode compression seems like a good idea, if the file is too big you can always

Re: [matplotlib-devel] imshow with PS backend

2006-07-30 Thread Gael Varoquaux
On Thu, Jul 27, 2006 at 01:33:42PM +0100, JIM MacDonald wrote: > Another way to do it is to pass extra > command line options to ps2pdf (-dAutoFilterColorImages=false > -sColorImageFilter=FlateEncode should do it for colour images). I > thought embedding it in the PS file would be more flexible.

Re: [matplotlib-devel] imshow with PS backend

2006-07-29 Thread Darren Dale
On Thursday 27 July 2006 8:33 am, JIM MacDonald wrote: > Hi, > > I've just moved from MATLAB to matplotlib, and I'm really impressed > with the quality of the PS figures it generates with usetex and the > xpdf distiller. Glad to hear it. > I've hit a couple of problems though [...] > The first p

[matplotlib-devel] imshow with PS backend

2006-07-28 Thread JIM MacDonald
Hi, I've just moved from MATLAB to matplotlib, and I'm really impressed with the quality of the PS figures it generates with usetex and the xpdf distiller. I've hit a couple of problems though, one I've manged to solve (patch against 0.87.4 attached) and the other I'd be greatful if you could hel