python - Plot .tif GDAL raster using matplotlib Basemap -


i have bit of code here using plotting geotiff image (landsat):

from mpl_toolkits.basemap import basemap osgeo import osr, gdal import matplotlib.pyplot plt import numpy np  # read data , metadata ds = gdal.open(filename)  data = ds.readasarray() gt = ds.getgeotransform() proj = ds.getprojection()  xres = gt[1] yres = gt[5]  # edge coordinates , add half resolution  # go center coordinates xmin = gt[0] + xres * 0.5 xmax = gt[0] + (xres * ds.rasterxsize) - xres * 0.5 ymin = gt[3] + (yres * ds.rasterysize) + yres * 0.5 ymax = gt[3] - yres * 0.5  ds = none  # create grid of xy coordinates in original projection xy_source = np.mgrid[xmin:xmax+xres:xres, ymax+yres:ymin:yres] # create figure , basemap object m = basemap(projection='robin', lon_0=0, resolution='c')  # create projection objects convertion inproj = osr.spatialreference() inproj.importfromwkt(proj)  # target projection basemap object outproj = osr.spatialreference() outproj.importfromproj4(m.proj4string)  size = xy_source[0,:,:].size ct = osr.coordinatetransformation(inproj, outproj) xy_target = np.array(ct.transformpoints(xy_source.reshape(2, size).t))

but, fails @ ct.transformpoints(xy_source.reshape(2, size).t)) , i'm not sure why. error gives me:

typeerror: in method 'coordinatetransformation_transformpoints', argument 1 of type 'osrcoordinatetransformationshadow *'

which not understand. osr guru's out there?

thanks reading.

edit 1 projection of .tiff

>>> print proj out[20]: 'projcs["wgs 84 / utm zone 34n",geogcs["wgs 84",datum["wgs_1984", spheroid["wgs 84",6378137,298.257223563,authority["epsg","7030"]], authority["epsg","6326"]],primem["greenwich",0], unit["degree",0.0174532925199433],authority["epsg","4326"]], projection["transverse_mercator"],parameter["latitude_of_origin",0], parameter["central_meridian",21],parameter["scale_factor",0.9996], parameter["false_easting",500000],parameter["false_northing",0], unit["metre",1,authority["epsg","9001"]],authority["epsg","32634"]]'

also, 

>>> m.proj4string out[43]: '+lon_0=0.0 +y_0=8615499.05007 +r=6370997.0 +proj=robin +x_0=16986796.165 +units=m '

the solution install proj4 package. otherwise, input projection not understood osr. 

conda install -c https://conda.binstar.org/jgomezdans proj4

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