153GIS2 / 10. cvičení: Porovnání verzí
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Řádek 6: | Řádek 6: | ||
===Ukázka skriptů:=== | ===Ukázka skriptů:=== | ||
<source lang="python"> | |||
import arcgisscripting, sys #import modulu | import arcgisscripting, sys #import modulu | ||
gp = arcgisscripting.create() #vytvoreni objektu geoprocessingu | gp = arcgisscripting.create() #vytvoreni objektu geoprocessingu | ||
Řádek 20: | Řádek 21: | ||
except: | except: | ||
print gp.GetMessages() | print gp.GetMessages() | ||
<source> | |||
<source lang="python"> | |||
import arcgisscripting, sys #import modulu | import arcgisscripting, sys #import modulu | ||
gp = arcgisscripting.create() #vytvoreni objektu geoprocessingu | gp = arcgisscripting.create() #vytvoreni objektu geoprocessingu | ||
Řádek 43: | Řádek 45: | ||
except: | except: | ||
print gp.GetMessages() | print gp.GetMessages() | ||
</source> | |||
<source lang="python"> | |||
import arcgisscripting, sys #import modulu | import arcgisscripting, sys #import modulu | ||
gp = arcgisscripting.create() #vytvoreni objektu geoprocessingu | gp = arcgisscripting.create() #vytvoreni objektu geoprocessingu | ||
Řádek 69: | Řádek 71: | ||
except: | except: | ||
print gp.GetMessages() | print gp.GetMessages() | ||
</source> | |||
{{GIS}} | {{GIS}} |
Verze z 5. 5. 2009, 15:24
Skriptování v Python - úvod
e-kniha o skriptování v ArcGIS
Ukázka skriptů:
import arcgisscripting, sys #import modulu
gp = arcgisscripting.create() #vytvoreni objektu geoprocessingu
gp.Overwriteoutput = 1 #nastaveno prepisovani
gp.workspace = "d:/jirka/skola/vyuka/gis/model/" #nastaveni workspace - pracovni adresar nebo geodatabaze
try:
data = gp.Describe("obce.shp")
fields = data.Fields
field = fields.next()
while field:
print field.Name
field = fields.next()
except:
print gp.GetMessages()
<source>
<source lang="python">
import arcgisscripting, sys #import modulu
gp = arcgisscripting.create() #vytvoreni objektu geoprocessingu
gp.Overwriteoutput = 1 #nastaveno prepisovani
gp.workspace = "d:/jirka/skola/vyuka/gis/model/" #nastaveni workspace - pracovni adresar nebo geodatabaze
try:
input = "Liberec" #String - nazev obce
rows = gp.SearchCursor("obce.shp") #vytvori cursor
row = rows.next() #promena row obsahuje jeden zaznam ze shapefilu
while row:
if row.GetValue("NAZEV") == input:
pocet = row.GetValue("OB01") #pocet obyvatel zadane obce
row = rows.next()
radky = gp.SearchCursor("obce.shp")
rad = radky.next()
while rad:
if rad.GetValue("OB01") > pocet:
print rad.GetValue("NAZEV"), rad.GetValue("OB01")
rad = radky.next()
except:
print gp.GetMessages()
import arcgisscripting, sys #import modulu
gp = arcgisscripting.create() #vytvoreni objektu geoprocessingu
gp.Overwriteoutput = 1 #nastaveno prepisovani
gp.workspace = "d:/jirka/skola/vyuka/gis/model/" #nastaveni workspace - pracovni adresar nebo geodatabaze
try:
input = sys.argv[1] #String - nazev obce
output = sys.argv[2] #cesta k textovemu souboru
f = open(output, 'w') #otevru file
rows = gp.SearchCursor("obce.shp") #vytvori cursor
row = rows.next() #promena row obsahuje jeden zaznam ze shapefilu
while row:
if row.GetValue("NAZEV") == input:
pocet = row.GetValue("OB01") #pocet obyvatel zadane obce
row = rows.next()
radky = gp.SearchCursor("obce.shp")
rad = radky.next()
while rad:
if rad.GetValue("OB01") > pocet:
f.write(rad.GetValue("NAZEV")+" "+str(rad.GetValue("OB01"))+"\n") #do souboru pisu obce ktere maji vic obyvatel nez zadana
rad = radky.next()
f.close()
except:
print gp.GetMessages()