matplotlib-users Mailing List for matplotlib

Hello,

 

I would like to have a cluttering functionality to colorbar.

http://en.wikipedia.org/wiki/Clutter_(radar)

 

Before writing it, I would like to know if there is a way to doing it with
matplotlib.

What I mean by cluttering is:

 

You've got a colormap associated with a graphic where value goes from 0 to
255 for example.

Assigning a classical colormap (for example cm.jet) 0 value will be blue and
255 one will be red.

What I need is a low  clutter and max clutter, if I set low clutter to 10
and ax cluter to 250 then:

Blue will be for value from 0 to 10

Then the colormap do his job from 10 to 250 and finally 

>From 250 to 255 colr will be set to max one = red.

 

Is it ever done in matplotlib, if not what could be the strategy here.?

I was thinking of set_over/set_under but seems not be exactly what I need
because I want to recreate the colormap from 10 to 250 with N segments.

(moreover I don't understand how you set the over/under value.)

 

Laurent

I am having problems plotting anything using version 0.98.1 on Linux Debian 4.  But 0.91.4 works fine.

When I try to plot something I get this error on the console:

Traceback (most recent call last):
  File "/usr/lib/python2.4/site-packages/matplotlib/backends/backend_gtk.py", line 331, in expose_event
    self._render_figure(self._pixmap, w, h)
  File "/usr/lib/python2.4/site-packages/matplotlib/backends/backend_gtkagg.py", line 75, in _render_figure
    FigureCanvasAgg.draw(self)
  File "/usr/lib/python2.4/site-packages/matplotlib/backends/backend_agg.py", line 357, in draw
    self.renderer = self.get_renderer()
  File "/usr/lib/python2.4/site-packages/matplotlib/backends/backend_agg.py", line 368, in get_renderer
    self.renderer = RendererAgg(w, h, self.figure.dpi)
  File "/usr/lib/python2.4/site-packages/matplotlib/backends/backend_agg.py", line 116, in __init__
    self.draw_polygon = self._renderer.draw_polygon
AttributeError: draw_polygon


And here is the configuration info from when I installed from src:


BUILDING MATPLOTLIB
            matplotlib: 0.98.1
                python: 2.4.4 (#2, Apr 15 2008, 23:43:20)  [GCC 4.1.2
                        20061115 (prerelease) (Debian 4.1.1-21)]
              platform: linux2

REQUIRED DEPENDENCIES
                 numpy: 1.1.0
             freetype2: 9.10.3

OPTIONAL BACKEND DEPENDENCIES
                libpng: 1.2.15beta5
               Tkinter: Tkinter: 39220, Tk: 8.4, Tcl: 8.4
              wxPython: 2.8.8.1
                        * WxAgg extension not required for wxPython >= 2.8
                  Gtk+: gtk+: 2.8.20, glib: 2.12.4, pygtk: 2.8.6, pygobject:
                        [pre-pygobject]
                    Qt: Qt: 3.3.6, PyQt: 3.16
                   Qt4: no
                 Cairo: 1.2.0

OPTIONAL DATE/TIMEZONE DEPENDENCIES
              datetime: present, version unknown
              dateutil: present, version unknown
                  pytz: 2006p

OPTIONAL USETEX DEPENDENCIES
                dvipng: 1.9
           ghostscript: 8.15.3
                 latex: 3.141592
               pdftops: 3.00

EXPERIMENTAL CONFIG PACKAGE DEPENDENCIES
             configobj: matplotlib will provide
      enthought.traits: no


I am guessing that I am either missing a library or need an updated version.  Does anyone have any ideas?

Thanks,
-Ben

Is it only me or is the user's guide linked to from
http://matplotlib.sourceforge.net/
(http://matplotlib.sourceforge.net/users_guide_0.98.1.pdf) quite old ? The
new user's guide seems to be available from
http://matplotlib.sourceforge.net/doc/html/index.html
-- 
View this message in context: http://www.nabble.com/An-updated-matplotlib-user%27s-guide-tp18695659p18695659.html
Sent from the matplotlib - users mailing list archive at Nabble.com.

Hi,

While others have mentioned the dual architecture problem, I'm going  
to completely divert your question and just point you to these two  
install notes for os x ... I think the last time I compiled matplotlib  
from source, I followed this .. it worked quite flawlessly on my MBP:
http://ipython.scipy.org/moin/Py4Science/InstallationOSX

Hopefully that will get you up and running, but if creating a  
universal binary is important to you, you can try looking here:
http://ipython.scipy.org/moin/MatplotlibOSXBuildNotes

HTH,
-steve

On Jul 27, 2008, at 7:44 PM, Ari Ehrmann wrote:

> Hey all,
>
> I've been having a lot of trouble installing matplotlib. I'm using a  
> macbook, on version 10.5.4 of Mac OS, intel processor (if that's  
> important). I've installed both numpy and scipy without problems,  
> but when I type this command to install matplotlib:
>
> CFLAGS="-Os -arch i386 -arch ppc" LDFLAGS="-Os -arch i386 -arch ppc"  
> python setup.py build
>
>
>
> I get this output:
>
>
>
>
> = 
> = 
> = 
> = 
> = 
> = 
> ======================================================================
> BUILDING MATPLOTLIB
>             matplotlib: 0.98.3
>                 python: 2.5 (r25:51918, Sep 19 2006, 08:49:13)  [GCC  
> 4.0.1
>                         (Apple Computer, Inc. build 5341)]
>               platform: darwin
>
> REQUIRED DEPENDENCIES
>                  numpy: 1.2.0.dev5513
>              freetype2: found, but unknown version (no pkg-config)
>
> OPTIONAL BACKEND DEPENDENCIES
>                 libpng: found, but unknown version (no pkg-config)
>                Tkinter: Tkinter: 50704, Tk: 8.4, Tcl: 8.4
>               wxPython: no
>                         * wxPython not found
>                   Gtk+: no
>                         * Building for Gtk+ requires pygtk; you must  
> be able
>                         * to "import gtk" in your build/install  
> environment
>                     Qt: no
>                    Qt4: no
>                  Cairo: no
>
> OPTIONAL DATE/TIMEZONE DEPENDENCIES
>               datetime: present, version unknown
>               dateutil: matplotlib will provide
>                   pytz: matplotlib will provide
>
> OPTIONAL USETEX DEPENDENCIES
>                 dvipng: no
>            ghostscript: /bin/sh: gs: command not found
>                  latex: no
>
> EXPERIMENTAL CONFIG PACKAGE DEPENDENCIES
>              configobj: matplotlib will provide
>       enthought.traits: no
>
> [Edit setup.cfg to suppress the above messages]
> = 
> = 
> = 
> = 
> = 
> = 
> ======================================================================
> running build
> running build_py
> copying lib/matplotlib/mpl-data/matplotlibrc -> build/ 
> lib.macosx-10.3-fat-2.5/matplotlib/mpl-data
> copying lib/matplotlib/mpl-data/matplotlib.conf -> build/ 
> lib.macosx-10.3-fat-2.5/matplotlib/mpl-data
> running build_ext
> building 'matplotlib.ft2font' extension
> g++ -arch i386 -arch ppc -isysroot /Developer/SDKs/MacOSX10.4u.sdk - 
> g -bundle -undefined dynamic_lookup -Os -arch i386 -arch ppc -Os - 
> arch i386 -arch ppc build/temp.macosx-10.3-fat-2.5/src/ft2font.o  
> build/temp.macosx-10.3-fat-2.5/src/mplutils.o build/temp.macosx-10.3- 
> fat-2.5/CXX/cxx_extensions.o build/temp.macosx-10.3-fat-2.5/CXX/ 
> cxxsupport.o build/temp.macosx-10.3-fat-2.5/CXX/ 
> IndirectPythonInterface.o build/temp.macosx-10.3-fat-2.5/CXX/ 
> cxxextensions.o -L/usr/local/lib -L/usr/lib -L/usr/X11R6/lib - 
> lfreetype -lz -lstdc++ -lm -o build/lib.macosx-10.3-fat-2.5/ 
> matplotlib/ft2font.so
> ld warning: in /Developer/SDKs/MacOSX10.4u.sdk/usr/local/lib/libstdc+ 
> +.dylib, file is not of required architecture
> ld: in /Developer/SDKs/MacOSX10.4u.sdk/usr/local/lib/libstdc++. 
> 6.dylib, file is not of required architecture for architecture i386
> collect2: ld returned 1 exit status
> ld warning: in /Developer/SDKs/MacOSX10.4u.sdk/usr/local/lib/libstdc+ 
> +.dylib, file is not of required architecture
> ld: in /Developer/SDKs/MacOSX10.4u.sdk/usr/local/lib/libstdc++. 
> 6.dylib, file is not of required architecture for architecture ppc
> collect2: ld returned 1 exit status
> lipo: can't open input file: /var/folders/S0/S0i2z-OAEtG1ZHpis54obU++ 
> +TM/-Tmp-//ccfhpaN5.out (No such file or directory)
> error: command 'g++' failed with exit status 1
>
>
>
>
>
> Has anyone had this problem or know what's even going here? Any help  
> would be greatly appreciated.
>
> Thanks,
> Ari
> -------------------------------------------------------------------------
> This SF.Net email is sponsored by the Moblin Your Move Developer's  
> challenge
> Build the coolest Linux based applications with Moblin SDK & win  
> great prizes
> Grand prize is a trip for two to an Open Source event anywhere in  
> the world
> http://moblin-contest.org/redirect.php?banner_id=100&url=/_______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users

Compiling some packages as fat binaries is a bit tricky. For some  
reason the double arch flag is messing it up. Are you set up using gcc  
3.x or 4.x?

If I recall correctly there has been some discussion of problems  
building matplotlib on the pythonmac-sig list, you might want to try  
looking in the archives over there.

For that matter, is there a reason you don't want to use the binary on  
sourceforge? The python 2.5 version that's posted for 0.98.1 is dual  
architecture.

David

On 27-Jul-08, at 7:44 PM, Ari Ehrmann wrote:

> Hey all,
>
> I've been having a lot of trouble installing matplotlib. I'm using a  
> macbook, on version 10.5.4 of Mac OS, intel processor (if that's  
> important). I've installed both numpy and scipy without problems,  
> but when I type this command to install matplotlib:
>
> CFLAGS="-Os -arch i386 -arch ppc" LDFLAGS="-Os -arch i386 -arch ppc"  
> python setup.py build
>
>
>
> I get this output:
>
>
>
>
> = 
> = 
> = 
> = 
> = 
> = 
> ======================================================================
> BUILDING MATPLOTLIB
>             matplotlib: 0.98.3
>                 python: 2.5 (r25:51918, Sep 19 2006, 08:49:13)  [GCC  
> 4.0.1
>                         (Apple Computer, Inc. build 5341)]
>               platform: darwin
>
> REQUIRED DEPENDENCIES
>                  numpy: 1.2.0.dev5513
>              freetype2: found, but unknown version (no pkg-config)
>
> OPTIONAL BACKEND DEPENDENCIES
>                 libpng: found, but unknown version (no pkg-config)
>                Tkinter: Tkinter: 50704, Tk: 8.4, Tcl: 8.4
>               wxPython: no
>                         * wxPython not found
>                   Gtk+: no
>                         * Building for Gtk+ requires pygtk; you must  
> be able
>                         * to "import gtk" in your build/install  
> environment
>                     Qt: no
>                    Qt4: no
>                  Cairo: no
>
> OPTIONAL DATE/TIMEZONE DEPENDENCIES
>               datetime: present, version unknown
>               dateutil: matplotlib will provide
>                   pytz: matplotlib will provide
>
> OPTIONAL USETEX DEPENDENCIES
>                 dvipng: no
>            ghostscript: /bin/sh: gs: command not found
>                  latex: no
>
> EXPERIMENTAL CONFIG PACKAGE DEPENDENCIES
>              configobj: matplotlib will provide
>       enthought.traits: no
>
> [Edit setup.cfg to suppress the above messages]
> = 
> = 
> = 
> = 
> = 
> = 
> ======================================================================
> running build
> running build_py
> copying lib/matplotlib/mpl-data/matplotlibrc -> build/ 
> lib.macosx-10.3-fat-2.5/matplotlib/mpl-data
> copying lib/matplotlib/mpl-data/matplotlib.conf -> build/ 
> lib.macosx-10.3-fat-2.5/matplotlib/mpl-data
> running build_ext
> building 'matplotlib.ft2font' extension
> g++ -arch i386 -arch ppc -isysroot /Developer/SDKs/MacOSX10.4u.sdk - 
> g -bundle -undefined dynamic_lookup -Os -arch i386 -arch ppc -Os - 
> arch i386 -arch ppc build/temp.macosx-10.3-fat-2.5/src/ft2font.o  
> build/temp.macosx-10.3-fat-2.5/src/mplutils.o build/temp.macosx-10.3- 
> fat-2.5/CXX/cxx_extensions.o build/temp.macosx-10.3-fat-2.5/CXX/ 
> cxxsupport.o build/temp.macosx-10.3-fat-2.5/CXX/ 
> IndirectPythonInterface.o build/temp.macosx-10.3-fat-2.5/CXX/ 
> cxxextensions.o -L/usr/local/lib -L/usr/lib -L/usr/X11R6/lib - 
> lfreetype -lz -lstdc++ -lm -o build/lib.macosx-10.3-fat-2.5/ 
> matplotlib/ft2font.so
> ld warning: in /Developer/SDKs/MacOSX10.4u.sdk/usr/local/lib/libstdc+ 
> +.dylib, file is not of required architecture
> ld: in /Developer/SDKs/MacOSX10.4u.sdk/usr/local/lib/libstdc++. 
> 6.dylib, file is not of required architecture for architecture i386
> collect2: ld returned 1 exit status
> ld warning: in /Developer/SDKs/MacOSX10.4u.sdk/usr/local/lib/libstdc+ 
> +.dylib, file is not of required architecture
> ld: in /Developer/SDKs/MacOSX10.4u.sdk/usr/local/lib/libstdc++. 
> 6.dylib, file is not of required architecture for architecture ppc
> collect2: ld returned 1 exit status
> lipo: can't open input file: /var/folders/S0/S0i2z-OAEtG1ZHpis54obU++ 
> +TM/-Tmp-//ccfhpaN5.out (No such file or directory)
> error: command 'g++' failed with exit status 1
>
>
>
>
>
> Has anyone had this problem or know what's even going here? Any help  
> would be greatly appreciated.
>
> Thanks,
> Ari
> -------------------------------------------------------------------------
> This SF.Net email is sponsored by the Moblin Your Move Developer's  
> challenge
> Build the coolest Linux based applications with Moblin SDK & win  
> great prizes
> Grand prize is a trip for two to an Open Source event anywhere in  
> the world
> http://moblin-contest.org/redirect.php?banner_id=100&url=/_______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users

are you sure you need to specify -arch i386 -arch ppc and not only -arch 
ppc  ??
It seems that according to the log mentioning i386 here does not please 
the linker. Maybe try without it?

my 2 cents,
Johann

Ari Ehrmann wrote:
> Hey all,
>
> I've been having a lot of trouble installing matplotlib. I'm using a 
> macbook, on version 10.5.4 of Mac OS, intel processor (if that's 
> important). I've installed both numpy and scipy without problems, but 
> when I type this command to install matplotlib:
>
> CFLAGS="-Os -arch i386 -arch ppc" LDFLAGS="-Os -arch i386 -arch ppc" 
> python setup.py build
>
>
>
> I get this output:
>
>
>
>
> ============================================================================
> BUILDING MATPLOTLIB
>             matplotlib: 0.98.3
>                 python: 2.5 (r25:51918, Sep 19 2006, 08:49:13)  [GCC 4.0.1
>                         (Apple Computer, Inc. build 5341)]
>               platform: darwin
>
> REQUIRED DEPENDENCIES
>                  numpy: 1.2.0.dev5513
>              freetype2: found, but unknown version (no pkg-config)
>
> OPTIONAL BACKEND DEPENDENCIES
>                 libpng: found, but unknown version (no pkg-config)
>                Tkinter: Tkinter: 50704, Tk: 8.4, Tcl: 8.4
>               wxPython: no
>                         * wxPython not found
>                   Gtk+: no
>                         * Building for Gtk+ requires pygtk; you must 
> be able
>                         * to "import gtk" in your build/install 
> environment
>                     Qt: no
>                    Qt4: no
>                  Cairo: no
>
> OPTIONAL DATE/TIMEZONE DEPENDENCIES
>               datetime: present, version unknown
>               dateutil: matplotlib will provide
>                   pytz: matplotlib will provide
>
> OPTIONAL USETEX DEPENDENCIES
>                 dvipng: no
>            ghostscript: /bin/sh: gs: command not found
>                  latex: no
>
> EXPERIMENTAL CONFIG PACKAGE DEPENDENCIES
>              configobj: matplotlib will provide
>       enthought.traits: no
>
> [Edit setup.cfg to suppress the above messages]
> ============================================================================
> running build
> running build_py
> copying lib/matplotlib/mpl-data/matplotlibrc -> 
> build/lib.macosx-10.3-fat-2.5/matplotlib/mpl-data
> copying lib/matplotlib/mpl-data/matplotlib.conf -> 
> build/lib.macosx-10.3-fat-2.5/matplotlib/mpl-data
> running build_ext
> building 'matplotlib.ft2font' extension
> g++ -arch i386 -arch ppc -isysroot /Developer/SDKs/MacOSX10.4u.sdk -g 
> -bundle -undefined dynamic_lookup -Os -arch i386 -arch ppc -Os -arch 
> i386 -arch ppc build/temp.macosx-10.3-fat-2.5/src/ft2font.o 
> build/temp.macosx-10.3-fat-2.5/src/mplutils.o 
> build/temp.macosx-10.3-fat-2.5/CXX/cxx_extensions.o 
> build/temp.macosx-10.3-fat-2.5/CXX/cxxsupport.o 
> build/temp.macosx-10.3-fat-2.5/CXX/IndirectPythonInterface.o 
> build/temp.macosx-10.3-fat-2.5/CXX/cxxextensions.o -L/usr/local/lib 
> -L/usr/lib -L/usr/X11R6/lib -lfreetype -lz -lstdc++ -lm -o 
> build/lib.macosx-10.3-fat-2.5/matplotlib/ft2font.so
> ld warning: in 
> /Developer/SDKs/MacOSX10.4u.sdk/usr/local/lib/libstdc++.dylib, file is 
> not of required architecture
> ld: in 
> /Developer/SDKs/MacOSX10.4u.sdk/usr/local/lib/libstdc++.6.dylib, file 
> is not of required architecture for architecture i386
> collect2: ld returned 1 exit status
> ld warning: in 
> /Developer/SDKs/MacOSX10.4u.sdk/usr/local/lib/libstdc++.dylib, file is 
> not of required architecture
> ld: in 
> /Developer/SDKs/MacOSX10.4u.sdk/usr/local/lib/libstdc++.6.dylib, file 
> is not of required architecture for architecture ppc
> collect2: ld returned 1 exit status
> lipo: can't open input file: 
> /var/folders/S0/S0i2z-OAEtG1ZHpis54obU+++TM/-Tmp-//ccfhpaN5.out (No 
> such file or directory)
> error: command 'g++' failed with exit status 1
>
>
>
>
>
> Has anyone had this problem or know what's even going here? Any help 
> would be greatly appreciated.
>
> Thanks,
> Ari 
> ------------------------------------------------------------------------
>
> -------------------------------------------------------------------------
> This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
> Build the coolest Linux based applications with Moblin SDK & win great prizes
> Grand prize is a trip for two to an Open Source event anywhere in the world
> http://moblin-contest.org/redirect.php?banner_id=100&url=/
> ------------------------------------------------------------------------
>
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>