Problem using dstile

[Holywhippet]

The sample file linked to on this page: http://www.worldwindcentral.com/wiki/Dstile_howto works fine, but whenever I try a different raster it never works. For example, I have a raster which has these bounds:

top: 71.9667029774756
bottom: -72.0332970225244
left: -180
right: 180

So I tried dstile with various settings for lztsd, here are the results:

C:\Program Files\FWTools1.1.2>dstile.exe tile --lztsd 180.0 --wwcache --overview
s output_tiles global_basement_model.img
lztsd set to 180.000000
Tile Mode set to WW Cache
global_basement_model.img:0.1625334150.6 6758391100 - done.
Building overviews:066133
C:\Program Files\FWTools1.1.2>dstile.exe tile --lztsd 10.0 --wwcache --overviews
output_tiles global_basement_model.img
lztsd set to 10.000000
Tile Mode set to WW Cache
global_basement_model.img:0...10...20... 30...40...50...60...70...80...90...100 -
done.
Building overviews:0
C:\Program Files\FWTools1.1.2>dstile.exe tile --lztsd 50.0 --wwcache --overviews
output_tiles global_basement_model.img
lztsd set to 50.000000
Tile Mode set to WW Cache
global_basement_model.img:0...11...22..3 0...41..50...61...72..80...91..100 - don
e.
Building overviews:0
C:\Program Files\FWTools1.1.2>dstile.exe tile --lztsd 100.0 --wwcache --overview
s output_tiles global_basement_model.img
lztsd set to 100.000000
Tile Mode set to WW Cache
global_basement_model.img:01020304050607 08090100 - done.
Building overviews:0
C:\Program Files\FWTools1.1.2>dstile.exe tile --lztsd 360.0 --wwcache --overview
s output_tiles global_basement_model.img
lztsd set to 360.000000
Tile Mode set to WW Cache
global_basement_model.img:0.1625334150.6 6758391100 - done.
Building overviews:062112
C:\Program Files\FWTools1.1.2>dstile.exe tile --lztsd 1.0 --wwcache --overviews
output_tiles global_basement_model.img
lztsd set to 1.000000
Tile Mode set to WW Cache
global_basement_model.img:0...10...20... 30...40...50...60...70...80...90...100 -
done.
Building overviews:0

None of the jpgs it produced looked particularly good to me.

What am I missing here? I can provide the source image if need be.

[withak]

It looks like it is working fine. What kind of image is your .img file? The problem may be in converting whatever that is to jpg.

[Holywhippet]

Originally Posted by withak

It looks like it is working fine. What kind of image is your .img file? The problem may be in converting whatever that is to jpg.

That particular image was an ERDAS Imagine type.

I tried again with a tif type image, this is the output from dstile:

C:\Program Files\FWTools1.1.2>dstile.exe tile --lztsd 140.0 --wwcache --overview
s output_tiles shn706_seebase_i.tif
lztsd set to 140.000000
Tile Mode set to WW Cache
shn706_seebase_i.tif:0...10...20...31... 40...50...60...70...81...90...100 - done
.
Building overviews:0.11.23.3542.51.62.7881.96102


The jpgs it produced look ok. Here is the contents of the XML file for the image:

<?xml version="1.0" encoding="UTF-8"?>
<LayerSet Name="Geology maps" ShowOnlyOneLayer="false" ShowAtStartup="false" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="LayerSet. xsd">
<QuadTileSet ShowAtStartup="true">
<Name>Seebase</Name>
<DistanceAboveSurface>0</DistanceAboveSurface>
<BoundingBox>
<North>
<Value>84</Value>
</North>
<South>
<Value>40</Value>
</South>
<West>
<Value>-79</Value>
</West>
<East>
<Value>60</Value>
</East>
</BoundingBox>
<TerrainMapped>true</TerrainMapped>
<ImageAccessor>
<LevelZeroTileSizeDegrees>140</LevelZeroTileSizeDegrees>
<NumberLevels>6</NumberLevels>
<TextureSizePixels>512</TextureSizePixels>
<ImageFileExtension>jpg</ImageFileExtension>
<PermanentDirectory>Data\Earth\output_ti les</PermanentDirectory>
</ImageAccessor>
<TransparentColor><Red>0</Red><Green>0</Green><Blue>0</Blue></TransparentColor>
</QuadTileSet>
</LayerSet>

The image should appear between North Africa and Greenland approximately. Instead, when I start up World Wind I find the image being shown over Brazil. If I try to zoom in on it the image gets patchy - either partially showing or disappearing. When I quit World Wind and take a second look at the images, some of them have been replaced by files with a DDS extension.

[David Lockwood]

So far, the only thing I've gotten to work properly is a GeoTiff file. I've tried a few others with no results.

[Tamas Kornai]

Did anybody manage to create tiles with dstile from a georeferenced jpg file?

I've included in the directory the word file (with jgw and jpw extension as well), and I've tried more different FWTools version. The output I get is like:

lztsd set to 36.000000
Tile Mode set to WW Cache
:

And then returns to the command line, without any files have been created. I managed to create the tile structure from a GeoTIFF file, so my problem is with the jpg + wordfile combination.

Thanks for your help.

[what_nick]

Hi the jpg+worldfile combination does not specify the projection of the image. You can supply this missing information using filename.prj file. The prj file contains the projection infor from the tif given by the top section of the "gdalinfo" on the tif file. You can also use the srcProj option is dstile to supply the source projection in epsg code.

Cheers,

what_nick

[Tamas Kornai]

Dear what_nick, thank you for your fast reply.

Would it be possible to attach a map with the appropriate world and projection files? It would help to work out the needed format for my own files. (Word file is quite well documented, but I'couldn't find an example projection file.)

Thank for your help,
Tamas