matplotlib-users Mailing List for matplotlib

Mauro Cavalcanti wrote:
> Dear ALL,
>
> I am using Basemap version 0.90 with MPL version 0.98.3 under Linux
> Ubuntu, both installed from Andrew Straw repository (I just prefer to
> install from repositories via apt than directly from the sources,
> although in this case I do not have always the latest versions).
>   

Mauro:  There never actually was a Basemap 0.90 - could you check that 
version number again with

 >>> from mpl_toolkits.basemap import __version__
 >>> print __version__
0.99.2

See below for my comment on the speed of drawing rivers ..

> I stumbled upon a few issues that I could not solve by looking at the
> available documentation. They are not really critical for me, but I
> would be interested in finding some more about them anyway.
>
> Here they are:
>
> i) When trying some of the projections listed in the Basemap
> documentation, I got a message saying that this or that projection is
> not available, what leads me to think that these projections have only
> been included in later versions of Basemap. However, I could not find
> this in the documentation. This is not critical for my current
> project, as I have no need to offer so many projections, but I would
> like to know.
>
> ii) The plotting of rivers using the drawrivers() method is painfully
> slow, even with resolution set to "crude". The FAQ provided with the
> Basemap source package offers an interesting suggestion for
> potentially solving this, but an exemple would be in order (the FAQ
> mentions an "ireland.py" example which I have however not found in the
> examples directory).
>   

Looked into this a bit and found that drawing rivers the first time is 
slow, since the reading and processing of the river data is deferred 
until the drawrivers method is called.  In contrast, the coastlines are 
read and processed on instance creation.  I did this because most people 
don't use the river data, and I didn't want to impose that penalty on 
them on instance creation.

Subsequent calls to drawrivers (with the same Basemap instance) are very 
fast.

-Jeff
> iii) In the same context as the above, I would be interested in
> knowing if there is some way to speed up the plotting of a map with
> the Blue Marble image superimposed on it.
>
> In general, I would like to suggest that the Basemap FAQ could be
> expanded and made available in the website, along with, perhaps, some
> the examples provided in the Basemap distribution package (in the same
> way the examples are provided in the MPL page).
>
> Well, hope this helps!
>
> Have a nice weekend.
>
> With best regards,
>
>   


-- 
Jeffrey S. Whitaker         Phone : (303)497-6313
NOAA/OAR/CDC  R/PSD1        FAX   : (303)497-6449
325 Broadway                Boulder, CO, USA 80305-3328

Hi,
does anyone know if there is something like matlabs 'axis ij' in
matplotlib? I'm often plotting data from the water column where the xaxis
should be on top of the plot and the yaxis should be reversed. 
Sünnje

Hi,

does that mean that it works for you with PyScripter?
Right now the only way to do more than one plot with MPL with PyScripter is 
to reinitialize the remote python interpreter over and over again.
If you found a way around that I would be glad to hear about it.

To the rest:
Might there be a way to mimick IPython's behavior of 'creating separate 
threads' (or whatever it might be that makes IPython do the trick) while 
importing matplotlib? IPython is great but having an editor/integrated 
debugger with all the other goodies that PyScripter offers PLUS interactive 
matplotlib-plotting would be even greater...

Cheers,


Thomas

----- Original Message ----- 
From: "Elfnor" <el...@gm...>
To: <mat...@li...>
Sent: Wednesday, December 03, 2008 11:05 PM
Subject: [Matplotlib-users] Can matplotlib be run from PythonWin IDE 
ininteractive mode?


>
> Hi
>
> I'm giving an introductory talk on matplotlib to colleagues next week. I'd
> like to run matplotlib in interactive mode from the PythonWin IDE. Is this
> possible?
>
> I use PyScripter or occasionally IPython myself, but the python group I'm
> talking to have all been set up with PythonWin and my brief is to avoid
> confusing then with another IDE.
>
> thanks Eleanor
> -- 
> View this message in context: 
> http://www.nabble.com/Can-matplotlib-be-run-from-PythonWin-IDE-in-interactive-mode--tp20822638p20822638.html
> Sent from the matplotlib - users mailing list archive at Nabble.com.
>
>
>
> 

Mauro Cavalcanti wrote:
> Dear ALL,
>
> I am using Basemap version 0.90 with MPL version 0.98.3 under Linux
> Ubuntu, both installed from Andrew Straw repository (I just prefer to
> install from repositories via apt than directly from the sources,
> although in this case I do not have always the latest versions).
>
> I stumbled upon a few issues that I could not solve by looking at the
> available documentation. They are not really critical for me, but I
> would be interested in finding some more about them anyway.
>
> Here they are:
>
> i) When trying some of the projections listed in the Basemap
> documentation, I got a message saying that this or that projection is
> not available, what leads me to think that these projections have only
> been included in later versions of Basemap. However, I could not find
> this in the documentation. This is not critical for my current
> project, as I have no need to offer so many projections, but I would
> like to know.
>   

Mauro:  Yes, the documentation applies to the current SVN version.  
Version 0.90 is rather old now.

> ii) The plotting of rivers using the drawrivers() method is painfully
> slow, even with resolution set to "crude". The FAQ provided with the
> Basemap source package offers an interesting suggestion for
> potentially solving this, but an exemple would be in order (the FAQ
> mentions an "ireland.py" example which I have however not found in the
> examples directory).
>   
I haven't noticed the rivers being slow, but I'll look into it.
> iii) In the same context as the above, I would be interested in
> knowing if there is some way to speed up the plotting of a map with
> the Blue Marble image superimposed on it.
>   
Plotting the blue marble image involves interpolating a very large array 
from lat/lon coordinates to projection coordinates.  So, no - there is 
no easy way to speed it up.  If you're only using a few different map 
projections and regions, you could pickle those basemap instances and 
re-use them, thereby saving the interpolation cost.  Using the "cyl" 
projection is reasonably fast, since there is no interpolation.
> In general, I would like to suggest that the Basemap FAQ could be
> expanded and made available in the website, along with, perhaps, some
> the examples provided in the Basemap distribution package (in the same
> way the examples are provided in the MPL page).
>   

I try to expand the docs in my spare time,  which I haven't had much of 
lately.  Volunteers are welcome!

-Jeff
> Well, hope this helps!
>
> Have a nice weekend.
>
> With best regards,
>
>   


-- 
Jeffrey S. Whitaker         Phone : (303)497-6313
NOAA/OAR/CDC  R/PSD1        FAX   : (303)497-6449
325 Broadway                Boulder, CO, USA 80305-3328

Dear ALL,

I am using Basemap version 0.90 with MPL version 0.98.3 under Linux
Ubuntu, both installed from Andrew Straw repository (I just prefer to
install from repositories via apt than directly from the sources,
although in this case I do not have always the latest versions).

I stumbled upon a few issues that I could not solve by looking at the
available documentation. They are not really critical for me, but I
would be interested in finding some more about them anyway.

Here they are:

i) When trying some of the projections listed in the Basemap
documentation, I got a message saying that this or that projection is
not available, what leads me to think that these projections have only
been included in later versions of Basemap. However, I could not find
this in the documentation. This is not critical for my current
project, as I have no need to offer so many projections, but I would
like to know.

ii) The plotting of rivers using the drawrivers() method is painfully
slow, even with resolution set to "crude". The FAQ provided with the
Basemap source package offers an interesting suggestion for
potentially solving this, but an exemple would be in order (the FAQ
mentions an "ireland.py" example which I have however not found in the
examples directory).

iii) In the same context as the above, I would be interested in
knowing if there is some way to speed up the plotting of a map with
the Blue Marble image superimposed on it.

In general, I would like to suggest that the Basemap FAQ could be
expanded and made available in the website, along with, perhaps, some
the examples provided in the Basemap distribution package (in the same
way the examples are provided in the MPL page).

Well, hope this helps!

Have a nice weekend.

With best regards,

-- 
Dr. Mauro J. Cavalcanti
Ecoinformatics Studio
P.O. Box 46521, CEP 20551-970
Rio de Janeiro, RJ, BRASIL
E-mail: mau...@gm...
Web: http://studio.infobio.net
Linux Registered User #473524 * Ubuntu User #22717
"Life is complex. It consists of real and imaginary parts."