SDE Rasters

Farber, Saul (ENV) Saul.Farber at STATE.MA.US
Tue Mar 22 13:38:40 PST 2005


Hello all,

So I'm working my way through using SDE as a datasource, and so far have
had much luck.

Vector features are drawing just fine, but I can't seem to get Rasters
to produce anything meaningful.

First off, I'm not totally sure how these rasters were loaded, but I
seem to have two types of SDE raster layers.

Type "A" layers have the following column structure:
Column          Type
NAME                    SE_STRING
IMAGE                   SE_RASTER

I can't find anything spatial about these layers (no FOOTPRINT, no
SHAPE, no nothing) so I'm laying them aside for now...


Type "B" layers, however, look more promising.  They have the following
structure:
Column          Type
OID                     SE_INT32
FOOTPRINT               SE_SHAPE
RASTER          SE_RASTER

Aha!  These look great.  So I setup my mapfile as so:
LAYER   
        TYPE    RASTER
        NAME    rastertest
        CONNECTIONTYPE SDE
        CONNECTION "localhost,port:5151,xxxx,xxxx,xxxx"
        DATA    "IMG_ELEV5K_I,FOOTPRINT,SDE.DEFAULT"
        STATUS ON
        DEBUG ON
        PROCESSING "BANDS=4,5,6,7"
        #PROCESSING "BANDS=1,2,3,4"
        PROCESSING "RASTERCOLUMN=RASTER"
END

But I'm disheartened to see a blank image drawn.  I've tried with both
BANDS= instructions.

Debugging is on, and compiled-in, but the debug log is pretty empty.  It
contains:

[Tue Mar 22 16:24:19 2005].768734 msDrawMap(): Drawing Label Cache,
0.000s
[Tue Mar 22 16:24:19 2005].769215 msDrawMap() total time: 0.007s
Tue Mar 22 16:24:19 2005,25129,146.243.227.89,test,3,33861.260000
757273.583750 330835.130000 980003.986250,-1.000000 -1.000000,rastertest
,normal execution


And that's it.

I know this is not much to go on, but while I'm not anything remotely
close to an expert in C.  However, I can make changes and recompile the
code just fine.

Any suggestions on where to look?  Where to put more debugging in?  It
would appear that the code isn't even getting far enough along to reach
the SDE layer draws, due to the lack of debug output from those
sections.

Thanks much.

--saul

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