Hoe voeg je een legenda toe aan een laag in ModelBuilder

Question

<\/HEAD>Beste allemaal!<\/P> <\/P> Ik probeer een legenda toe te voegen aan een laag in ModelBuilder. De help-pagina's zeggen dat ik de tool "Apply Symbology From Layer" moet gebruiken. Ik heb mijn Symbology Layer opgeslagen, maar deze bevat mijn legenda niet (zoals ik het begrijp kan een legenda alleen worden opgeslagen in een Map-bestand). Kunt u mij alstublieft uitleggen hoe ik dit correct doe?<\/P><\/BODY><\/HTML>

NaimeCelik · Answer

Actually, I think the question is about adding legend by using model builder to automate the process instead of doing it manually..  not sure how to add legend in model builder but you can create legend items after adding symbology in arcpy.. If you have any idea about  how to add legend with model or script, I can also utilize from that..

NtriankosIoannis · Answer

Hi,

if this is just for symbology... right click in the model element (final output) -> properties -> layer symbology tab

NaimeCelik · Answer

Ok I created tool and here how you do it.

This  is the tool view below

Here the script for it

import arcpy,os

symbologyLayer=arcpy.GetParameterAsText(2)

LabelExpression=arcpy.GetParameterAsText(1)

try:

for idx, item in enumerate(LabelExpression.split()):

if 'VISIBLE'==item:

num=idx

arcpy.AddWarning(LabelExpression.split()[idx-1])

LabelExpression="["+LabelExpression.split()[num-1]+"]"

except:

arcpy.AddError("Choose only one field name for label expession")

K_shp=arcpy.GetParameterAsText(0)

add_legend= arcpy.GetParameterAsText(3)

LayerName=os.path.split(K_shp)[1][:-4]+"_lyr"

mxd = arcpy.mapping.MapDocument("CURRENT")

df = arcpy.mapping.ListDataFrames(mxd)[0]

arcpy.MakeFeatureLayer_management(K_shp,LayerName)

lyr1= arcpy.mapping.Layer(LayerName)

arcpy.ApplySymbologyFromLayer_management (lyr1, symbologyLayer)

lyr1.labelClasses[0].expression = LabelExpression

lyr1.showLabels = True

arcpy.RefreshActiveView()

arcpy.mapping.AddLayer(df, lyr1, "BOTTOM")

if add_legend=='true':

#styleItem = arcpy.mapping.ListStyleItems("USER_STYLE", "Legend Items", "NewDefaultLegendStyle")[0]

legend = arcpy.mapping.ListLayoutElements(mxd, "LEGEND_ELEMENT", "Legend")[0]

#legend.updateItem(lyr1, styleItem)

legend.autoAdd = True

del mxd

Above is the tool parameters you need to arrange..

Only thing that I could not figure out how to add legend itself with arcpy, so you need to manully create and empty legend before you run the script.