[ncl-talk] shapefiles problem

[Vanúcia Schumacher]

Hi


The ascii file is a mask with missing values and values in some pixels, as in the attached figure.
The problem is that when I try to create another mask using the shapefile (to set only pixels in a specific region- smaller region of the ascii file) it returns only missing values.


See printVarSummary:

Variable: data
Type: float
Total Size: 80496 bytes
            20124 values
Number of Dimensions: 2
Dimensions and sizes:    [lat | 156] x [lon | 129]
Coordinates:
            lat: [-34.69..-34.51]
            lon: [-70.36..-70.28]
Number Of Attributes: 3
  lat2d :    <ARRAY of 20124 elements>
  lon2d :    <ARRAY of 20124 elements>
  _FillValue :    -9999
(0)    min=0   max=14.9
    ======================================================================
(0)    Filename: "Glaciares.shp"
(0)       Geometry type: point
(0)       # of features: 5
(0)       Min/max lat:    -34.69/ -34.51
(0)       Min/max lon:    -70.36/ -70.28
(0)       Variable names and their types:
(0)           geometry : integer
(0)           segments : integer
(0)           x : double
(0)           y : double
(0)           Id : integer
(0)           Nombre : string
(0)    ======================================================================
(0)    min=-9999   max=-9999


________________________________
De: Rick Brownrigg <brownrig at ucar.edu>
Enviado: terça-feira, 23 de janeiro de 2018 19:16:28
Para: Vanúcia Schumacher
Cc: ncl-talk at ucar.edu
Assunto: Re: [ncl-talk] shapefiles problem

Hi,

Looking at your ascii file, I see its either all missing_values, or a handful of zeros. There's nothing to contour in a uniform scalar field, and NCL produced the contour plot I would expect in that case.

Hope that helps...
Rick

On Tue, Jan 23, 2018 at 1:14 PM, Vanúcia Schumacher via ncl-talk <ncl-talk at ucar.edu<mailto:ncl-talk at ucar.edu>> wrote:

I was able to open the shapefile, but I can't plot the data_mask, because all the values are missing. I do not know if I'm doing something wrong when using the shapefile.


I've attached the files I'm using to facilitate


I appreciate any help

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