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Resample: References to SDE- Curiosity aroused

Timmo

Timmo

Messages
558
Country
newzealand
Hi There, in the list of the various 'Resample.exe' parameters in the SDK documention there are references to using Vector data held in an SDE database (SDE = Spatial Database engine, its a way of storing GIS data [Shapefiles] in a logical and efficient way)

Ive got some landcover data that I want to resample into LandClass information....the raw data is held in a featureclass (SDE equivalent of a shapefile) and the documentation seems to indicate that I can use the resample tool to convert this vector data into a BGL (Similar to Shp2Vec although there doesnt appear to be anyway to use Shp2Vec to make landclass data?)

Can anyone confirm that this tool can be used for this? (Im asking first as it will take a bit of work to re-reproject and re-attribute the data)
And if it can, what attributes/column names do you need to use....SDK docs dont mention this

Cheers in advance.
Tim
 
D

DougMatthews

Messages
288
Country
us-washington
Timmo said:
Hi There, in the list of the various 'Resample.exe' parameters in the SDK documention there are references to using Vector data held in an SDE database (SDE = Spatial Database engine, its a way of storing GIS data [Shapefiles] in a logical and efficient way)

Ive got some landcover data that I want to resample into LandClass information....the raw data is held in a featureclass (SDE equivalent of a shapefile) and the documentation seems to indicate that I can use the resample tool to convert this vector data into a BGL (Similar to Shp2Vec although there doesnt appear to be anyway to use Shp2Vec to make landclass data?)

Can anyone confirm that this tool can be used for this? (Im asking first as it will take a bit of work to re-reproject and re-attribute the data)
And if it can, what attributes/column names do you need to use....SDK docs dont mention this

Cheers in advance.
Tim
Click to expand...

We (ACES) definitely ran Resample against SDE databases. A lot. I'm not sure if we were able to ship all the parts necessary to do so. I'm not sure of the specifics of attributes/column names. I'll try to ask tomorrow.

-Doug
 
Last edited:
Timmo

Timmo

Messages
558
Country
newzealand
Damn....that's a shame
Is it at all possible to release them/post them- It would make generating scenery for large areas a lot easier (which is presumably why they were written).....

Pretty please :)

Failing that, the SDK docs dont mention much about the image format for landlclass...im assuming (based on the resample example) that you need a grayscale image where the pixel value = the olsen LC value in the table??

I.e. Black (0) = Ocean, Sea, Large Lake etc?
 
Timmo

Timmo

Messages
558
Country
newzealand
hmmm actually.....another question. Is it possible to use Shp2Vec to convert shapefiles into Landclass data? Would this get around the 1.2km pixel resolution limit? (I.e. be able to have really detailed Land Class data?)
.
There are references to using GUIDs to define Landclass areas (listed in VectorShapePropertiesGuids.txt) I originally thought it couldnt because it was only mentioned in relation to exclusions in the SDK docs....???

But now maybe im thinking they can......or will this simply resample to a 1.2km 'Image' (i.e loose the scalability of vector data)

Cheers
 
rhumbaflappy

rhumbaflappy

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Staff member
Resource contributor
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5,789
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us-wisconsin
Hi Timmo.

You can draw vectors that use the landclass textures. The terrain.cfg file describes them, and lists their GUID. You would probably want to draw them as a PKX ( park ) type.

You can draw any size/shape you like.

Dick
 
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