What is gvSIG 2 and his new Scripting Framework?
You will learn how to develop your own tools!
Desktop Application
gvSIG Desktop is a powerful geographic information system (GIS) designed to offer a free solution to all needs related to geographic information management.
Scripting Framework
New module for gvSIG 2.x that will help you to create your own tools using Jython (it’s like Python), easy language even if you never write code before.
So.. What is gvpy?
Less code, more powerful
This library will help you to develop your tools quickly. Also, now is not available execute any geoprocess from your script. This will allow you to use one powerful extension like SEXTANTE with one line of code.
Execute your tool with one click
Scripts
You can check in my blog masquesig.com a lot of examples about this, how to create shapes with scripts, features, geometries... Sometimes can be a little bit tricky and require practice with gvsig code.
But with gvpy..
You could create the image above with one click, and i’m sure you will undertand all the code you need. It will be like this:
from gvpy import *
def main(*args):
layer = gvsig.currentLayer() #Base layer
#Create new shapes
layer1 = newLayer(layer,"C:/gvsig/point_shape.shp", 1)
layer2 = newLayer(layer,"C:/gvsig/line_shape.shp", 2)
layer3 = newLayer(layer,"C:/gvsig/polygon_shape", 3)
#Add new features
addFeature(layer1, "point", "01", [50,80]) #New Points
addFeature(layer1, "point", "02",[150,50])
addFeature(layer1, "point", "03",[100,10])
addFeature(layer1, "point", "04",[0,10])
addFeature(layer2, "line", "01", [[50,80],[150,50],[100,10],[0,10],[50,80]]) #New Line
addFeature(layer3, "polygon", "01", [[50,80],[150,50],[100,10],[0,10],[50,80]]) #New polygon
#Modify all values in one column
modifyFeatures(layer1, "field1", "Points_gsoc")
modifyFeatures(layer2, "field1", "Lines_gsoc")
#Modify schema
addField(layer1,"Name")
removeField(layer1,"Name")
#Execute SEXTANTE: algorithm ’perturbate points’
r = gvpy.runalg("perturbatepointslayer", LAYER = layer1,MEAN = 5, STDDEV = 5 )
Easy, right?
You could find more info on my blog masquesig.com
and the code in Github.
Any help will be appreciated, you can contact with me here: masquesig@gmail.com
