Re: Map of Indian states

Hi Prince,

I think Adam is out this morning. If you can get these lat/lon values
into something that NCL can read, like an ASCII file or even a netCDF
file, then yes, this would be of help.

For example, if you had an ascii file "latlon.dat" with two columns:

     lat_value1 lon_value1
     lat_value2 lon_value2
       .... ...

Then you can read it in with:

    latlon = asciiread("latlon.dat",-1,"float")
    lat = latlon(0::2)
    lon = latlon(1::2)

You can then use these lat/lon values in a call to "gsn_add_polyline" to
attach and draw them on your map plot. Please see example 4 or 6 at:

    http://www.ncl.ucar.edu/Applications/polyg.shtml

for information on how to add lines to a map plot.

--Mary

On Thu, 23 Feb 2006, Prince K. Xavier wrote:

> Hi Adam,
>
> I have a database of lat-lon for Indian states used in GrADS. Will that be of
> any help?
>
> Thanks
> Prince
>
> On Wed, 22 Feb 2006, Adam Phillips wrote:
>
>> Hi Prince,
>>
>> Unfortunately, Indian states are not listed in the Ncarg4_1 database table:
>> http://www.ncl.ucar.edu/Document/HLUs/Classes/MapPlotData4_1.shtml
>>
>> Thus, the only way that I know of to get NCL to draw them is to use
>> latitude/longitude pairs and use gsn_polyline to manually draw the state
>> borders yourself. If you don't have the latitude/longitude coordinates
>> already this can be quite a tedious process...
>>
>> If you are interested in doing this, let me know and I can come up with a
>> quick example on how to draw 1 state...
>> Adam
>>
>> Prince K. Xavier wrote:
>>> Hello,
>>>
>>> Is it possible in NCL to draw maps of Indian states? If not, is there a
>>> round-about way of including it in NCL?
>>>
>>> Thanks in advance
>>> Prince
>>
>>
>
> --
> Prince K XAVIER
> Centre for Atmospheric and Oceanic Sciences Indian Institute of Science
> Bangalore - 560 012 INDIA http://caos.iisc.ernet.in/hpg/students/prince.html
> __________________________________________________ Phone No. +91 80 2293 2505
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Received on Thu Feb 23 2006 - 09:18:19 MST