gvsig-scripting / org.gvsig.scripting / trunk / org.gvsig.scripting / org.gvsig.scripting.app / org.gvsig.scripting.app.mainplugin / src / main / resources-plugin / scripting / scripts / examples / monitor / monitor_suma1.py @ 900
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# encoding: utf-8
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from gvsig import currentLayer, currentView |
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from gvsig.commonsdialog import msgbox, inputbox, QUESTION |
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"""
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Para probar este ejemplo cargue la capa MANZANAS_POB de la carpeta
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data y seleccionela en el TOC
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"""
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def calcular_sumatorio(mapContext, layer, fieldname): |
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encuadre = mapContext.getViewPort().getEnvelope().getGeometry() |
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lineas = layer.getFeatureStore().getFeatureSet().iterator() |
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suma = 0
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for linea in lineas: |
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g = linea.getDefaultGeometry() |
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if encuadre.intersects(g) :
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suma += int(linea.get(fieldname))
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print "Sumatorio de %s: %s" % (fieldname, suma) |
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def main(*args): |
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if currentView() == None: |
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msgbox("Debera tener una vista abierta y activa")
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return
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mapContext = currentView().getMapContext() |
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layer = currentLayer() |
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if layer == None: |
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msgbox("Debera tener seleccionada la capa sobre la que desea trabajar")
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return
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fieldname = inputbox( |
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"Introduzca el nombre del campo para calcular el sumatorio",
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"Nombre de campo",
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QUESTION, |
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"pob_total"
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) |
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if fieldname in ("",None): |
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msgbox("Operacion cancelada")
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return
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calcular_sumatorio(mapContext, layer, fieldname) |
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