[GRASS-dev] pygrass: it is an error of mine?

GRASS GIS GRASS GIS developer
1

Dear all,

I have a rasterNumpy map
_____________
type(new)
Out[94]: grass.pygrass.raster.RasterNumpy
_______________

Inside there are some nan and some float32 values.

I would like to set the nans to 0.0

I have tried with:
_____________
whereAreNaNs = np.isnan(new);
new[whereAreNaNs] = 0.0;
_____________

But this is part of what I obtain:

_______________________________________________
new
Out[98]:
RasterNumpy([[ 0. , 0. , 0. ,
0. ,
           0. , 0. , 0. , 0. ,
           0. , 0. , 0. , 0. ,
           0. , 0. , 0. , 0. ,
           0. , 0. , 0. , 0. ],
       [ 0. , 0. , 0. , 0. ,
           0. , 0. , 0. , 0. ,
           0. , 0. , 0. , 0. ,
           0. , 0. , 0. , 0. ,
           0. , 0. , 0. , 0. ],
       [ nan, nan, nan, nan,
                  nan, nan, nan, nan,
                  nan, nan, 339.98999023, nan,
                  nan, nan, nan, 348.72000122,
         348.82998657, nan, nan, nan],
       [ nan, nan, nan, nan,
                  nan, nan, nan, nan,
...
...
___________________________________

It seems that only the first row of the matrix is affected by the
change..

is that my fault?

Thank you very much

Ivan

2

Hi Ivan,

On Wed, Mar 12, 2014 at 2:13 PM, Ivan Marchesini
<ivan.marchesini@gmail.com> wrote:

Inside there are some nan and some float32 values.

I would like to set the nans to 0.0

[cut]

It seems that only the first row of the matrix is affected by the
change..

I got the same problem trying to set to nan some values, so I think is
a bug in the RasterNumpy class, the weird thing is that it seems to
work for the first two lines...
I have no time to work on it at the moment.

Best regards

Pietro