[gradsusr] still having trouble with shapefiles

[Jason M. Warren]

I still can not figure this out.  Here is what I have come up with:

'set shp -line C:\OpenGrADS-2.2\data\haz\current_all'
'set gxout shp'
'set shp -ln -fmt 8 4 linem'
'set shpattr AUTHOR string SPC'
'set shpattr TYPE string grid lines'
'set shpattr DESC string red flag warning'
'd var209113_500m'

I can not figure out how to define the shapefile element, which in this 
instance would be RFW.  I also can not figure out how to output to a new 
shapefile.  Any assistance would be greatly appreciated.


Thank you,

Jason Warren



On 3/7/2022 18:35, gradsusr-request at gradsusr.org wrote:
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> Today's Topics:
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>     1. Re: Plotting shapefile elements (Jeff Duda)
>     2. Re: [EXTERNAL] Re:  Plotting shapefile elements
>        (Adams, Jennifer M. (GSFC-610.2)[ADNET SYSTEMS INC])
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 7 Mar 2022 10:23:28 -0700
> From: Jeff Duda <jeffduda319 at gmail.com>
> To: GrADS Users Forum <gradsusr at gradsusr.org>
> Subject: Re: [gradsusr] Plotting shapefile elements
> Message-ID:
> 	<CAAig09Duramt92AdAEXfKiBPtHHVyqO97ium=J9HULcd_K3aSw at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Consult the GrADS user's page on shapefiles first:
> http://cola.gmu.edu/grads/gadoc/shapefiles.html
>
> I recommend writing each set of product types to a separate shapefile using
> 'gxout shp' and 'shpattr' to control which elements are draw to which file.
> Then plot all elements of each shapefile separately using traditional means.
>
> Jeff Duda
>
> On Mon, Mar 7, 2022 at 4:16 AM Jason M. Warren <jason at solargrafix.com>
> wrote:
>
>> Hello,
>>
>> I am trying to plot a shapefile which contains multiple elements.  I
>> queried the shp and dbf files as follows:
>>
>>
>> ga-> q shp current_warnings
>> Shapefile Type=Polygon #Shapes=4 XBounds=-88.9:-86.86 YBounds=29.38:37.16
>> 0:  Polygon  parts=1  vertices=5  XBounds=-88.05:-86.86
>> YBounds=29.38:30.01  ZBounds=0:0  MBounds=0:0
>> 1:  Polygon  parts=1  vertices=19  XBounds=-88.49:-87.05
>> YBounds=36.5:37.16  ZBounds=0:0  MBounds=0:0
>> 2:  Polygon  parts=1  vertices=8  XBounds=-88.9:-88.36
>> YBounds=31.43:31.63  ZBounds=0:0  MBounds=0:0
>> 3:  Polygon  parts=1  vertices=11  XBounds=-88.35:-88.01
>> YBounds=32.05:32.25  ZBounds=0:0  MBounds=0:0
>>
>>
>> ga-> q dbf current_warnings
>> RECORD#,PHENOM,SIG,WARNID,WFO,EVENT,ISSUANCE,EXPIRATION,URL,MSG_TYPE,PROD_TYPE
>>
>>
>> 0,MA,W,O.NEW.KMOB.MA.W.0008.0109022
>>           2070225.670784,KMOB,0008,2022-01-09 19:02:25,2022-01-09
>> 21:00:00,
>> http://forecast.weather.gov/product.php?site=MOB&issuedby=MOB&product=SMW,SMW,Marine
>> Warning
>> 1,FF,W,O.CON.KPAH.FF.W.0005.0109022
>>           2055627.670773,KPAH,0005,2022-01-09 17:56:27,2022-01-09
>> 21:15:00,
>> http://forecast.weather.gov/product.php?site=PAH&issuedby=PAH&product=FFS,FFS,Flash
>> Flood Warning
>> 2,SV,W,O.NEW.KMOB.SV.W.0003.0109022
>>           2072922.670791,KMOB,0003,2022-01-09 19:29:22,2022-01-09
>> 20:15:00,
>> http://forecast.weather.gov/product.php?site=MOB&issuedby=MOB&product=SVR,SVR,Severe
>> Thunderstorm Warning
>> 3,SV,W,O.CON.KMOB.SV.W.0001.0109022
>>           2072321.670789,KMOB,0001,2022-01-09 19:23:21,2022-01-09
>> 19:45:00,
>> http://forecast.weather.gov/product.php?site=MOB&issuedby=MOB&product=SVS,SVS,Severe
>> Thunderstorm Warning
>>
>>
>> However, I can not figure out how to plot this with different colors for
>> each element (SVR, SMW, etc...).  I have tried the following code which
>> plots everything in the shapefile...
>>
>>
>> 'set rgb 1  255 0 0 255'
>> 'set shpopts -1'
>> 'set line 1 1 1'
>> 'draw shp current_warnings'
>>
>>
>> But I need to know how to draw each kind of element separately (SVR,
>> SMW, etc...).
>>
>> Thanks,
>>
>> Jason Warren
>>
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