Feature request for a watermark function

Hi All,
  This is to let you know that I have filed a feature request for a watermark function in mpl.

http://sourceforge.net/tracker/index.php?func=detail&atid=560721&aid=2001940&group_id=80706

Nils

There are a couple of different ways this could be done.

Alpha-blending over top of the image (should work for everything but Postscript):

gcf().text(0.1, 0.1, "Watermark", rotation=45, fontproperties=FontProperties(size=64), alpha=0.2)

Or under the axes as described here:

http://www.mail-archive.com/matplotlib-users@lists.sourceforge.net/msg06036.html

The fiddly bits are just scaling it in such a way to fit.

Patches welcome... :wink:

Cheers,
Mike

Nils Wagner wrote:

···

Hi All,
  This is to let you know that I have filed a feature request for a watermark function in mpl.

http://sourceforge.net/tracker/index.php?func=detail&atid=560721&aid=2001940&group_id=80706

Nils

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Michael Droettboom
Science Software Branch
Operations and Engineering Division
Space Telescope Science Institute
Operated by AURA for NASA

One could use the adaptive approach I posted previously for
subplots_adjust -- connect to the draw event and recursively scale the
fontsize until is mostly covers the canvas
  http://matplotlib.sourceforge.net/doc/html/faq/howto_faq.html#how-do-i-automatically-make-room-for-my-tick-labels

One could also use figimage for this if you want to watermark with a
PNG or JPG, but right now figure artists don't respect zorder so some
minor work would need to be done to get the watermark on top.

JDH

···

On Tue, Jun 24, 2008 at 1:10 PM, Michael Droettboom <mdroe@...31...> wrote:

There are a couple of different ways this could be done.

Alpha-blending over top of the image (should work for everything but
Postscript):

gcf().text(0.1, 0.1, "Watermark", rotation=45,
fontproperties=FontProperties(size=64), alpha=0.2)

Or under the axes as described here:

http://www.mail-archive.com/matplotlib-users@lists.sourceforge.net/msg06036.html

The fiddly bits are just scaling it in such a way to fit.

Actually, I would like to display an image (png format) 'under' several lines.
Assuming that a watermark function will be supported by mpl, it would be nice to have an example in

matplotlib/examples/pylab_examples

Nils

···

On Tue, 24 Jun 2008 14:10:08 -0400 Michael Droettboom <mdroe@...31...> wrote:

There are a couple of different ways this could be done.

Alpha-blending over top of the image (should work for everything but Postscript):

gcf().text(0.1, 0.1, "Watermark", rotation=45, fontproperties=FontProperties(size=64), alpha=0.2)

Or under the axes as described here:

http://www.mail-archive.com/matplotlib-users@lists.sourceforge.net/msg06036.html

The fiddly bits are just scaling it in such a way to fit.

Patches welcome... :wink:

Cheers,
Mike

johnh@...539...:examples> svn commit -m 'added simple watermark examples'
Adding examples/api/watermark_image.py
Adding examples/api/watermark_text.py
Adding (bin) examples/data/logo2.png
Transmitting file data ...
Committed revision 5669.

···

On Tue, Jun 24, 2008 at 1:27 PM, Nils Wagner <nwagner@...425...> wrote:

Actually, I would like to display an image (png format)
'under' several lines.
Assuming that a watermark function will be supported by
mpl, it would be nice to have an example in

matplotlib/examples/pylab_examples

Great ! Thank you very much !!

Nils

···

On Tue, 24 Jun 2008 14:03:33 -0500 "John Hunter" <jdh2358@...149...> wrote:

On Tue, Jun 24, 2008 at 1:27 PM, Nils Wagner > <nwagner@...425...> wrote:

Actually, I would like to display an image (png format)
'under' several lines.
Assuming that a watermark function will be supported by
mpl, it would be nice to have an example in

matplotlib/examples/pylab_examples

johnh@...539...:examples> svn commit -m 'added simple watermark examples'
Adding examples/api/watermark_image.py
Adding examples/api/watermark_text.py
Adding (bin) examples/data/logo2.png
Transmitting file data ...
Committed revision 5669.