[ncl-talk] Unable to read shapefile attribute table correctly

[Dave Allured - NOAA Affiliate]

Peirong,

You should start debugging something like this with printVarSummary (f) and
print(f), not getfilevarnames (f).

--Dave


On Tue, Aug 5, 2014 at 3:13 PM, Peirong Lin <peironglinlin at gmail.com> wrote:

> Dear NCL,
>
> I am using the following NCL code to read a shapefile attribute table
> (which allows further computation), but when I printed out all the
> "COMIDs", they are all "0". But when I open the shapefile in ArcGIS, the
> COMIDs can be correctly shown. Can anybody provide some hints to resolve
> this?
>
>
> *begin*
>
> *shp_file        = "./NHDFlowline.shp"*
>
> *f       = addfile(shp_file,"r")*
>
> *varnames        = getfilevarnames(f)*
>
> *print("varnames = "+varnames)*
>
> *COMIDs  = f->COMID*
>
> *print(COMIDs)*
>
> *end*
>
> I've already made sure the COMID is a variable in the shapefile, but the
> values just cannot be read correctly. Thank you in advance for replying!!
>
> Best,
> Peirong
>
>
> --
> *Peirong Lin* (Ms.)
> Graduate Research Assistant (JGB 5.322)
> Jackson School of Geosciences
> The University of Texas at Austin
> Contact: 512-201-3731
> prlin at utexas.edu; peironglinlin at gmail.com
>
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