Jerl,<br><br>I'm afraid gdal_rasterize can't do the labelling. You will need a specialized renderer for that. I'm not familiar with any of the desktop applications that do this. Perhaps, qgis has a plugin.<br><br>
<div class="gmail_quote">On Tue, May 17, 2011 at 1:30 AM, Jerl Simpson <span dir="ltr"><<a href="mailto:jsimpson@wxtrends.com">jsimpson@wxtrends.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
I already have the resultant image, it looks great. Just drawing<br>
lines on a map. I'm using a blank image so I can more clearly see<br>
what's going on. It's just a black and white image, and that's all I<br>
want.<br>
I'm trying to get the contour labeled, so I know which one I'm<br>
viewing. So on the 1000 contour, I should see 1000 on the line<br>
somewhere, and if it's a 547 contour, I should see 547 on the line<br>
somewhere.<br>
<br>
Is that possible?<br>
<br>
Thanks,<br>
<br>
Jerl<br>
<div><div></div><div class="h5"><br>
On Mon, May 16, 2011 at 2:41 PM, Chaitanya kumar CH<br>
<<a href="http://chaitanya.ch" target="_blank">chaitanya.ch</a>@<a href="http://gmail.com" target="_blank">gmail.com</a>> wrote:<br>
> Jerl,<br>
><br>
> The contour attribute and the Z values are same here. Just one of them is<br>
> enough.<br>
><br>
> With the Z values near the magnitude of 1000, the burn value of 255 is not<br>
> going to make much of a difference. Use it if you want to offset any<br>
> negative Z values.<br>
><br>
> You should mention contour.shp instead of just 'contour' for<br>
> <src_datasource>.<br>
><br>
> Make sure BLANK.tif doesn't have different extents/projection.<br>
><br>
> Your final image will have a data type of Float64. You may have to run some<br>
> contrast stretching operations on it.<br>
><br>
> On Tue, May 17, 2011 at 12:04 AM, Jerl Simpson <<a href="mailto:jsimpson@wxtrends.com">jsimpson@wxtrends.com</a>><br>
> wrote:<br>
>><br>
>> Hi guys and gals:<br>
>><br>
>> I have something that's evading me. I have a basic ESRI Shape file<br>
>> (created using gdal_contour) that I run through gdal_rasterize to<br>
>> generate very nice looking contour map. But I want the value of the<br>
>> contour in there.<br>
>><br>
>> I've been trying different things with the -a option, but I can't get<br>
>> it to work out.<br>
>> Here's the latest thing I've tried for gdal_rasterize:<br>
>><br>
>> gdal_rasterize -a contour -3d -b 1 -b 2 -b 3 -b 4 -burn 255 -burn 255<br>
>> -burn 255 -burn 255 -burn 255 -l contour contour BLANK.tif<br>
>><br>
>> I put an extra burn value in there (have also tried with out) to see<br>
>> if maybe it was just going in as 0. BLANK.tif is just a black image.<br>
>> I'm sure I'm missing something simple, just can't see it. I thought<br>
>> the -a would burn the value of "contour" into the raster.<br>
>><br>
>> Thanks for any guidance!!<br>
>><br>
>> Here's the data from my shapefile:<br>
>><br>
>> INFO: Open of `contour/'<br>
>> using driver `ESRI Shapefile' successful.<br>
>><br>
>> Layer name: contour<br>
>> Geometry: 3D Line String<br>
>> Feature Count: 157<br>
>> Extent: (-0.500000, -89.830132) - (359.500000, 89.144137)<br>
>> Layer SRS WKT:<br>
>> GEOGCS["GCS_WGS_1984",<br>
>> DATUM["WGS_1984",<br>
>> SPHEROID["WGS_1984",6378137,298.257223563]],<br>
>> PRIMEM["Greenwich",0],<br>
>> UNIT["Degree",0.017453292519943295]]<br>
>> ID: Integer (8.0)<br>
>> contour: Real (12.3)<br>
>> OGRFeature(contour):0<br>
>> ID (Integer) = 0<br>
>> contour (Real) = 1000.000<br>
>> LINESTRING (87.765060240963862 80.0 1000,.....<br>
>> _______________________________________________<br>
>> gdal-dev mailing list<br>
>> <a href="mailto:gdal-dev@lists.osgeo.org">gdal-dev@lists.osgeo.org</a><br>
>> <a href="http://lists.osgeo.org/mailman/listinfo/gdal-dev" target="_blank">http://lists.osgeo.org/mailman/listinfo/gdal-dev</a><br>
><br>
><br>
><br>
> --<br>
> Best regards,<br>
> Chaitanya kumar CH.<br>
> /tʃaɪθənjə/ /kʊmɑr/<br>
> +91-9494447584<br>
> 17.2416N 80.1426E<br>
><br>
<br>
<br>
<br>
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</font></blockquote></div><br><br clear="all"><br>-- <br>Best regards,<br>Chaitanya kumar CH.<br>/tʃaɪθənjə/ /kʊmɑr/ <br>+91-9494447584<br>17.2416N 80.1426E<br>