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20031020: GEMPAK questions
- Subject: 20031020: GEMPAK questions
- Date: Mon, 20 Oct 2003 17:22:33 -0600
Tim,
If you can put your data into a surface format similar to what SFLIST
produces, then SFEDIT will create a gempak surface file from your
ascii data.
The tutorial page:
http://my.unidata.ucar.edu/content/software/gempak/tutorial/importing_exercises.html
shows an example of a way to create an ascii formated data file and station
table.
If your 1300 sites are fixed locations, then creating a standard surface file
is the easiest route since you will only have to create a station table once.
For mobile locations, then you would have to have SLAT and SLON in every record
and
create a ship format surface file.
You will need to assign a unique 4 to 8 character station ID for each site
(this can be as simple as a counter as shown in the example).
More information on the station table location format is shown here:
http://my.unidata.ucar.edu/content/software/gempak/tutorial/station_tables.html
Information on SFLIST is here:
http://my.unidata.ucar.edu/content/software/gempak/tutorial/sflist.html
and SFEDIT here:
http://my.unidata.ucar.edu/content/software/gempak/tutorial/manual/programs/chap4.php?prog=sfedit
you will have to create an empty surface file using a station table using SFCFIL
http://my.unidata.ucar.edu/content/software/gempak/tutorial/manual/programs/chap4.php?prog=sfcfil
before running SFEDIT.
Steve Chiswell
>From: "Critter Consulting" <address@hidden>
>Organization: Critter Consulting
>Keywords: 200310202204.h9KM43Ob024326
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>Hi,
>
> I'm new at using Gempak. We want to plot some air quality
>data (hourly surface ozone concentration) at 1300 sites throughout the
>U.S.
>
> If I understand Gempak we need to get the data converted to
>a .gem file and then it could be plotted with a program like GARP or
>NMAP2.
>
> How to I get this air quality data (which is in a CSV
>formatted file) into a .gem file?
>
> Do you now of generic decoders for non-weather data?
>
> Can I write my own program?
>
>Thanks for you help on this issue.
>
>Regards,
>
>Tim Dye
>(707) 665-9900
>
>
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>
><p class=3DMsoNormal><font size=3D2 face=3DArial><span =
>style=3D'font-size:10.0pt;
>font-family:Arial'>Hi,<o:p></o:p></span></font></p>
>
><p class=3DMsoNormal><font size=3D2 face=3DArial><span =
>style=3D'font-size:10.0pt;
>font-family:Arial'><o:p> </o:p></span></font></p>
>
><p class=3DMsoNormal><font size=3D2 face=3DArial><span =
>style=3D'font-size:10.0pt;
>font-family:Arial'><span =
>style=3D'mso-tab-count:1'>  =
>; </span>I’m
>new at using <span class=3DSpellE>Gempak</span>.<span
>style=3D'mso-spacerun:yes'> </span>We want to plot some air =
>quality data
>(hourly surface ozone concentration) at 1300 sites throughout the =
></span></font><st1:country-region><st1:place><font
> size=3D2 face=3DArial><span =
>style=3D'font-size:10.0pt;font-family:Arial'>U.S.</span></font></st1:plac=
>e></st1:country-region><font
>size=3D2 face=3DArial><span =
>style=3D'font-size:10.0pt;font-family:Arial'><span
>style=3D'mso-spacerun:yes'> </span><o:p></o:p></span></font></p>
>
><p class=3DMsoNormal><font size=3D2 face=3DArial><span =
>style=3D'font-size:10.0pt;
>font-family:Arial'><o:p> </o:p></span></font></p>
>
><p class=3DMsoNormal><font size=3D2 face=3DArial><span =
>style=3D'font-size:10.0pt;
>font-family:Arial'><span =
>style=3D'mso-tab-count:1'>  =
>; </span>If
>I understand <span class=3DSpellE>Gempak</span> we need to get the data =
>converted
>to a .gem file and then it could be plotted with a program like GARP or =
>NMAP2.<o:p></o:p></span></font></p>
>
><p class=3DMsoNormal><font size=3D2 face=3DArial><span =
>style=3D'font-size:10.0pt;
>font-family:Arial'><o:p> </o:p></span></font></p>
>
><p class=3DMsoNormal><font size=3D2 face=3DArial><span =
>style=3D'font-size:10.0pt;
>font-family:Arial'><span =
>style=3D'mso-tab-count:1'>  =
>; </span>How
>to I get this air quality data (which is in a CSV formatted file) into a =
>.gem
>file?<o:p></o:p></span></font></p>
>
><p class=3DMsoNormal><font size=3D2 face=3DArial><span =
>style=3D'font-size:10.0pt;
>font-family:Arial'><o:p> </o:p></span></font></p>
>
><p class=3DMsoNormal><font size=3D2 face=3DArial><span =
>style=3D'font-size:10.0pt;
>font-family:Arial'><span =
>style=3D'mso-tab-count:1'>  =
>; </span>Do
>you now of generic decoders for non-weather =
>data?<o:p></o:p></span></font></p>
>
><p class=3DMsoNormal><font size=3D2 face=3DArial><span =
>style=3D'font-size:10.0pt;
>font-family:Arial'><o:p> </o:p></span></font></p>
>
><p class=3DMsoNormal><font size=3D2 face=3DArial><span =
>style=3D'font-size:10.0pt;
>font-family:Arial'><span =
>style=3D'mso-tab-count:1'>  =
>; </span>Can
>I write my own program?<o:p></o:p></span></font></p>
>
><p class=3DMsoNormal><font size=3D2 face=3DArial><span =
>style=3D'font-size:10.0pt;
>font-family:Arial'><o:p> </o:p></span></font></p>
>
><p class=3DMsoNormal><font size=3D2 face=3DArial><span =
>style=3D'font-size:10.0pt;
>font-family:Arial'>Thanks for you help on this =
>issue.<o:p></o:p></span></font></p>
>
><p class=3DMsoNormal><font size=3D2 face=3DArial><span =
>style=3D'font-size:10.0pt;
>font-family:Arial'><o:p> </o:p></span></font></p>
>
><p class=3DMsoNormal><font size=3D2 face=3DArial><span =
>style=3D'font-size:10.0pt;
>font-family:Arial'>Regards,<o:p></o:p></span></font></p>
>
><p class=3DMsoNormal><font size=3D2 face=3DArial><span =
>style=3D'font-size:10.0pt;
>font-family:Arial'><o:p> </o:p></span></font></p>
>
><p class=3DMsoNormal><font size=3D2 face=3DArial><span =
>style=3D'font-size:10.0pt;
>font-family:Arial'>Tim Dye<o:p></o:p></span></font></p>
>
><p class=3DMsoNormal><font size=3D2 face=3DArial><span =
>style=3D'font-size:10.0pt;
>font-family:Arial'>(707) 665-9900<o:p></o:p></span></font></p>
>
><p class=3DMsoNormal><font size=3D2 face=3DArial><span =
>style=3D'font-size:10.0pt;
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>
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