Roger André wrote: > Hi Jeff, > > I checked, and no the images are not geographically square. I wonder > if I could approach this problem in a different way. Would it be > possible for me to add tick marks and annotation to the image without > using the Basemap module alone? My thinking is that I could bring the > image into Matplotlib, define a square figure, and then manually > define the size of the X and Y axes and label them. Is it possible to > "decorate" an image this way, without using any projection support? > > Thanks for the help, > > Roger
Roger: Sure, you could do that. I'm not sure why you would want to display an image that's not geographically square as a square though. What's wrong with just letting Basemap show it as a rectange? -Jeff > -- > > On Tue, Dec 16, 2008 at 4:43 AM, Jeff Whitaker <jsw...@fastmail.fm > <mailto:jsw...@fastmail.fm>> wrote: > > Roger André wrote: > > Hi All, > > I have some square images which were generated via WMS > requests. I have imported them into Matplotlib via > pil_to_array, and then display them in a Basemap instance > where I have defined the projection as: > > m = Basemap(projection='cyl', lon_0=lon_0, llcrnrlon=ll_lon, > llcrnrlat=ll_lat, urcrnrlon=ur_lon, > urcrnrlat=ur_lat, suppress_ticks=False) > > While this works (it appears the tics are at the right > places), the image is no longer square, and I wonder if my > projection definition is correct. > > Can someone show me what the correct Basemap parameters are > for working with images that are in EPSG:4326? > > Thanks, > > Roger > > > Roger: The image will only be square if ur_lon-ll_lon = > ur_lat-ll_lat (i.e. the longitude range equals the latitude > range). Is this the case? > -Jeff > > -- > Jeffrey S. Whitaker Phone : (303)497-6313 > NOAA/OAR/CDC R/PSD1 FAX : (303)497-6449 > 325 Broadway Boulder, CO, USA 80305-3328 > > -- Jeffrey S. Whitaker Phone : (303)497-6313 Meteorologist FAX : (303)497-6449 NOAA/OAR/PSD R/PSD1 Email : jeffrey.s.whita...@noaa.gov 325 Broadway Office : Skaggs Research Cntr 1D-113 Boulder, CO, USA 80303-3328 Web : http://tinyurl.com/5telg ------------------------------------------------------------------------------ SF.Net email is Sponsored by MIX09, March 18-20, 2009 in Las Vegas, Nevada. The future of the web can't happen without you. Join us at MIX09 to help pave the way to the Next Web now. Learn more and register at http://ad.doubleclick.net/clk;208669438;13503038;i?http://2009.visitmix.com/ _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
