[GRASS-user] v.out.ogr to KML ERROR 1: Latitude is invalide

[maven apache]

Thanks Micha for his help!Following his advise, I install the qgis,and the
grass plugin and create new location(epsg4326),and reproj my vector map to
this proj,then export it to kml successfully,however when add the kml to
googlearth I found the layer doesnot match the tiff,the annex can give a
clear explaination.
The reason I export the map to kml and add it to googlearth is to make a
thecmatic map by their areas(I have five vector maps),also I found the
d.vect.thecmatic is to make this kind of map ,however I did not sure the
"column" parameter,I wonder this commond is useful for my goal?
2009/6/21 Micha Silver <micha at arava.co.il>

> maven apache wrote:
>
>> I am using 6.3,my tiff info:
>> ---------------------------------------
>> Coordinate System is:
>> PROJCS["WGS 84 / UTM zone 20S",
>>    GEOGCS["WGS 84",
>>        DATUM["WGS_1984",
>>            SPHEROID["WGS 84",6378137,298.2572235630016,
>>                AUTHORITY["EPSG","7030"]],
>>            AUTHORITY["EPSG","6326"]],
>>        PRIMEM["Greenwich",0],
>>        UNIT["degree",0.0174532925199433],
>>        AUTHORITY["EPSG","4326"]],
>>    PROJECTION["Transverse_Mercator"],
>>    PARAMETER["latitude_of_origin",0],
>>    PARAMETER["central_meridian",-63],
>>    PARAMETER["scale_factor",0.9996],
>>    PARAMETER["false_easting",500000],
>>    PARAMETER["false_northing",10000000],
>>    UNIT["metre",1,
>>        AUTHORITY["EPSG","9001"]],
>>    AUTHORITY["EPSG","32720"]]
>> --------------------------------------------------------------
>> First I create location :g.proj -c georef=d:/swilAlphaTIFF.tif
>> datumtrans=0 location=newlocation
>> then import it to the new location: get four raster maps(it has three
>> band),I composite them and then transfer the composted raster to vector,then
>> extract each category to a vector,one of them is named bule.
>> Then I start to covert the projection.
>> I creation new epsg4326 location: then "v.proj input=bule
>> location=newlocation mapset=PERMANENT dbase=D:\GrassDataBase output=newblue
>> But when I display the newblue it is blank,just like the projection is not
>> matched......
>> I ...... have no idea.
>>
>> =============================
>> Actually I have exported the vector data to shapefile ,then use arcgis to
>> transfer the shapefile to kml,but I think the accurcy is low...
>>
>> 2009/6/19 Hamish <hamish_b at yahoo.com <mailto:hamish_b at yahoo.com>>
>>
>>
>>    Hamish:
>>    > create a new lat/lon WGS84 location with EPSG code #
>>    > 4326, then pull in maps from source mapset using r.proj, v.proj.
>>
>>    maven:
>>    > I have lose my heart so....  So many
>>    > people have gave me help,.......I can not do it.
>>
>>
>>    ok probably that I broke g.proj in 6.4.0rc5 makes it my fault that you
>>    can't create any new locations :) sorry.
>>
>>
>>
>>    try this:
>>
>>    start grass from the command line with
>>
>>    grass64 -text
>>
>>    then type a new location name, esc-enter, and create new Lat/Lon
>>    location.
>>    follow prompts, when it asks for a datum type "wgs84".
>>
>>
>>
>>    or try to install another version besides 6.4.0rc5
>>     (not 6.5svn or 7svn either).
>>
>>  Maven:
> Don't lose heart! It seems you've already made some good progress.
> Based on Hamish's suggestion (older version of GRASS) maybe you should try
> QGIS with it's GRASS plugin.
> On windows it's fairly easy to install the whole package with the OSGeo4W
> installer. Follow carefully the instructions here:
> http://sites.google.com/site/eospansite/qsig-for-windows
> THen start QGIS, and activate the GRASS plugin, and there's a button on the
> GRASS toolbar to create a new location. You select the GISDBASE
> (D:\GrassDataBase) then use the  EPSG ID (4326) to define projection (Be
> sure to click the "Find" button) , and you should be up and running in the
> new Lat/Lon location.
> Now use v.proj  (from the QGIS GRASS toolbox) to project your vector from
> UTM to the new LatLon location, and then find v.out.ogr (again in the QGIS
> GRASS toolbox ) to make the kml file.
> BTW, If you prefer, you can close QGIS right after creating the location,
> and then open GRASS in this new Lat/Lon location and do these last two steps
> from within GRASS.
> --
> Micha
>
>
>>
>>    good luck,
>>    Hamish
>>
>>
>>
>>
>>
>>
>>
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