Giuseppe Aruta a écrit :
> Hi Michael,
> a couple of question:
> 1) Is it possible to create a bean tool which automatically calculate the x,y
> coordinates of a point layer and write them as attributes? This script will
> be quite useful for GPS support.
>
Sure, not very difficult,
I put it here after. If you want to test it and if it suits your needs,
we can add it to the distribution.
> 2) One of the possible line od OJ development is the construction of a "model
> buider" similar to one which in Sextante
> (http://openjump.org/wiki/show/Google+Summer+Of+Code+Ideas+List), how
> Beanshell can be useful for it?
>
I did not explore sextante yet, but I like very much the idea of model
builder.
As far as I can imagine a model builder, it uses interfaces with inputs,
outputs and a methods to process data.
The processing part could be defined as a script to include methods
which are not proposed by the basic model builder.
Exemple :
The model builder may propose a "filter a featureCollection", "union a
featureCollection", but miss a "explode a featureCollection containing
geometryCollections". With beanshell, just do it yourself. It's just
some thoughts, it may not be so easy to include scripting capabilities
into such a model and its user interface.
Michaël
Here is the script to add XY attributes :
// This script adds a new layer from a selected one
// The new layer has two new attributes
// containing X and Y of a coordinate
import com.vividsolutions.jump.feature.*;
import com.vividsolutions.jump.workbench.model.StandardCategoryNames;
ll = wc.layerNamePanel.selectedLayers;
if (ll.length != 1) wc.workbench.frame.warnUser("Exactly one layer must
be selected");
else {
fc = ll[0].featureCollectionWrapper;
fs = fc.featureSchema.clone();
fs.addAttribute("X", AttributeType.DOUBLE);
fs.addAttribute("Y", AttributeType.DOUBLE);
resultFC = new FeatureDataset(fs);
for (f : fc.features) {
nf = new BasicFeature(fs);
for (int i = 0 ; i < fs.attributeCount-2 ; i++){
nf.setAttribute(i, f.getAttribute(i));
}
nf.setAttribute("X", f.geometry.coordinate.x);
nf.setAttribute("Y", f.geometry.coordinate.y);
resultFC.add(nf);
}
wc.layerManager.addLayer(StandardCategoryNames.RESULT,
ll[0].name+"_XY", resultFC);
}
> Regards
>
> Peppe
>
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