high resolution map image

Hi all,

I've to draw a plot in a very small area (about 1 degree of height/width) with
a map image.
I've tried with the warpimage method and with the Nasa visible Earth images
(http://visibleearth.nasa.gov/view_cat.php?categoryID=1484), but I've some
problems:
- with the resolution 21600x10800 the image is still too bad
- with the resolution 21600x21600 the image is distributed in panels and
  warpimage method required a whole world image

Merging the 6 panels maybe it can works, but I think my laptop can't process a
so big image.

Any suggestion for cutting the image area before passing it to Basemap?
Or another kind of images to use?

Thank you very much,

···

--

Francesco Benincasa

Hi all,

I've to draw a plot in a very small area (about 1 degree of height/width)
with
a map image.
I've tried with the warpimage method and with the Nasa visible Earth
images
(http://visibleearth.nasa.gov/view_cat.php?categoryID=1484), but I've some
problems:
- with the resolution 21600x10800 the image is still too bad
- with the resolution 21600x21600 the image is distributed in panels and
  warpimage method required a whole world image

Merging the 6 panels maybe it can works, but I think my laptop can't
process a
so big image.

Any suggestion for cutting the image area before passing it to Basemap?
Or another kind of images to use?

Thank you very much,

I recommend using GDAL (http://gdal.org/) for geospatial stuff. There's
Python bindings, but it'd be easier to just select the area you need from
the input file (using gdal_translate or gdalwarp), and then load the newly
created file for Basemap processing.

A.