Update raster_layers.html

[vieiramesquita]

The Calculate zonal statistics exemple in the page have a little problem. The variable "feat" of the funtion "zonal_stats" is being overwritten by the line feat = lyr.GetNextFeature(). Please, correct this removing this line of the code!

[ustroetz]

Awesome that you send right away a PR. I haven't worked on this project in a while.

But I think we have to change it in the raster_layers.rst file. It will then be converted to HTML automatically.

@pcjericks should be able to provide more insights.

https://github.com/pcjericks/py-gdalogr-cookbook/blob/master/raster_layers.rst#calculate-zonal-statistics

[pcjericks]

Yep, could you modify your pull request to update the raster_layers.rst? The gh-pages branch is all generated by running the make file.

[vieiramesquita]

Thanks guys, i needed this tool to work with a heavy raster dataset and i've noted this little problem :D.

[kannes]

#170 has the proper fix.