Latest Contributions by danbecker

thanks Jake. Yeah, unfortunately, most of the feat. classes I need to check are polygons ... View more

not the most elegant solution, but to calc. geometries of an unprojected feat. class, I ended up: projecting feat. class - output to temp.gdb calculated geometry of temp feat. class make feat. layer of temp feat. class join temp feat. layer "OBJECTID" ----- with ----- original feat. class "OBJECTID" calc field of orig. feat. class with the calculated geometries ... View more

depending on how many gdb's you have, this can be done in ArcMap...manually. 1. Start with a new ArcMap document, then double click on 'layers' in the table of contents 2. in data frame properties, go to coordinate system tab/ predefined/ geographic coor system/world/wgs84 3. hit "ok, then "yes" on the warning 4. add your feat classes 5. create 2 new fields, named 'lat' and 'long' 6. right click on the field and choose 'calc geometry' 7. select 'y coordinate of a point' then select 'use coordinate system of the dataframe' units 'decimal degrees' 8. you now have a column of latitude coordinates. 9. do the same for 'long' field. remember, x measures distance E/W of Prime Meridian, y measures N/S of equator ... View more

humm, created 2 polygons inside a feat. class. OBJECTID = 1 was created using the "end arc point segment tool" and OBJECTID = 2 was created using the "straight line segment" tool. Ran this script: fclist = gp.listfeatureclasses("arc_test*")             for fc in fclist:                 rows = gp.searchcursor(fc)                 row = rows.next()                 while row:                     typ = row.Shape                     geom = str(typ.centroid.X)                     print row.getvalue("OBJECTID"), geom                     truegeom = str(typ.truecentroid.X)                     print row.getvalue("OBJECTID"), truegeom                     row = rows.next() Here is the output: 1 -93.0638463269 1 -93.0638463269 2 -93.0635589449 2 -93.0635589449 both geom & truegeom are the same, for both polygons, even though 1 of them contains an arc segment?? ... View more

this should get ya going. I didn't see the need for the .describe since your end goal is to loop through datasets/features anyway. Take note of the "*" wildcards in the listdatasets and listfeatureclasses methods. You could enter "utilities*" to only loop through all feat. datasets that begin with "utilities". dsList = arcpy.ListDatasets("*", "Feature") for dataset in dsList:     arcpy.env.workspace = sde + "\\" + dataset     fcList = arcpy.ListFeatureClasses("*")     for feature in fcList:         arcpy.env.workspace = dataset + "\\" + feature featout = output + dataset + "\\" feature print featout arcpy.Project_management(feature, featout, outCS, transformation, inCS) ... View more

Hi everyone, I have a gdb (v9.3) with several feat. datasets. All the feat. datasets are unprojected, coor. system set to WGS1984. I can calc. coord_x and coord_y fields of the point feat. classes fine using the below code, all is well. Once the script hits a polygon feat. class, I would like to calc. the area_size field to area - acres. At present, the code doesn't calculate anything, even with the polyref pointing to a projected, .prj file. At the bottom, in the 'polygon' section, you'll see a commented out section: #expression = "!shape.area@acres!"                                    #gp.CalculateField_management(fc, fn, expression, "PYTHON_9.3") When this is uncommented, (and the updatecursor method commented out) it calculates area just fine, but of course, since the feat. class is unprojected, it calc.s area_size to 1.4857433E-06, which obiv. is in WGS84 DD. Any thoughts? thanks! # Import system modules import arcgisscripting, os gp = arcgisscripting.create(9.3) # Load required toolboxes... #gp.AddToolbox("C:/Program Files/ArcGIS/ArcToolbox/Toolboxes/Data Management Tools.tbx") gp.AddToolbox("C:/Program Files/ArcGIS/Desktop10.0/ArcToolbox/Toolboxes/Data Management Tools.tbx") #gp.workspace = r"G:\\63D RRC GIS Data\\63D_RSC_GDB" gp.workspace = r"C:\\temp\\python" #gp.workspace = r"G:\\63D RRC GIS Data" pathwrksp = gp.workspace # print pathwrksp PointRef = r"C:\\Program Files\\ArcGIS\\Desktop10.0\\Coordinate Systems\\Geographic Coordinate Systems\\World\\WGS 1984.prj" PolyRef = r"C:\\Program Files\\ArcGIS\\Desktop10.0\\Coordinate Systems\\Projected Coordinate Systems\\Continental\\North America\\USA Contiguous Albers Equal Area Conic USGS.prj" path2wrksps = gp.ListWorkspaces("OK002*") for path2wrksp in path2wrksps:     #print "... " + path2wrksp     gp.workspace = path2wrksp     facil_id = str(path2wrksp[34:39])     instln_id = "06510"     #print facil_id     wrksps3 = gp.ListWorkspaces("*", "FileGDB")     for wrksp3 in wrksps3:         gp.workspace = wrksp3         print "...... " + gp.workspace         datasets = gp.ListDatasets("cad*")                for dataset in datasets:             gp.workspace = wrksp3 + "\\" + dataset             #print dataset             FcList = gp.ListFeatureClasses("*","Point")             for fc in FcList:                                gp.workspace = dataset + "\\" + fc                 if fc <> "soil_map_unit_area":                     if fc <> "wetland_area":                         if fc <> "flood_zone_area":                             print fc                             #if gp.exists("vehicle_parking_area"):                             rows = gp.UpdateCursor(fc, "", PointRef)                             for row in rows:                                 allFields = gp.listfields(fc)                                 print fc                                 for field in allFields:                                     fn = field.name                                     if fn == "coord_x":                                         feat = row.shape                                         coord = feat.getPart()                                         lon = coord.X                                         row.coord_x = lon                                         rows.updateRow(row)                                                                                print fc, fn + " calculated to long"                                     elif fn == "coord_y":                                         feat = row.shape                                         coord = feat.getPart()                                         lat = coord.Y                                         row.coord_y = lat                                         rows.updateRow(row)                                         print fc, fn + " calculated to lat"             FcList = gp.ListFeatureClasses("*","Polygon")             for fc in FcList:                                gp.workspace = dataset + "\\" + fc                 if fc <> "soil_map_unit_area":                     if fc <> "wetland_area":                         if fc <> "flood_zone_area":                             print fc                             rows = gp.UpdateCursor(fc, "", PolyRef)                             for row in rows:                                 allFields = gp.listfields(fc)                                 print fc                                 for field in allFields:                                     fn = field.name                                     if fn == "area_size":                                         feat = row.getValue("SHAPE")                                         cent = feat.area                                         rows.updateRow(row)                                         #expression = "!shape.area@acres!"                                                                            #gp.CalculateField_management(fc, fn, expression, "PYTHON_9.3")                                         print fc, fn + " calculated to area" ... 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You sir are a gentlemen and a scholar. That's exactly what I was looking for. If anyone is interested, here's my updated code for a script tool with a multivalue parameter. import arcpy latLonRef = "Coordinate Systems\Geographic Coordinate Systems\World\WGS 1984.prj" featureClasses = arcpy.GetParameterAsText(0) featureClassesList = featureClasses.split(";") for featureClass in featureClassesList: arcpy.AddMessage("Calculating XY coordinates for: " + featureClass) arcpy.AddField_management(featureClass, "LAT", "DOUBLE") arcpy.AddField_management(featureClass, "LON", "DOUBLE") rows = arcpy.UpdateCursor(featureClass, "", latLonRef) for row in rows:   feat = row.shape   coord = feat.getPart()   lon = coord.X   lat = coord.Y   row.LAT = lat   row.LON = lon   rows.updateRow(row)   #arcpy.AddMessage(str(lat) + ", " + str(lon)) this is great; how would one modify to calc. area? thanks! ... View more

Hello, I have two IMG rasters 8bit unsigned, 1 band, discrete. When I do "mosaic to new raster" I always get 3 band RGB, even when I select 1 band (no matter if it is TIFF, ESRI GRID, IMG). Is there any other setting so that I can mosaic 1 band rasters into 1 band raster as it worked in previous 9.3.1 version? regards, Jan I have this exact problem when using mosaic to new raster. Any update to this problem? thanks, ... View more

I was able to fix the problem by installing .NET Framework 2.0 SDK and adding the .dlls to the GAC using gacutil.exe /i "C:\Program Files\Microsoft.NET\SDK\v2.0\Bin\gacutil.exe" /i "C:\Program Files\ArcGIS\Desktop10.0\Bin\GpMetadataFunctions.dll" "C:\Program Files\Microsoft.NET\SDK\v2.0\Bin\gacutil.exe" /i "C:\Program Files\ArcGIS\Desktop10.0\Bin\MetadataTranslator.dll" thanks for the info! I have an 'export metadata' python script written using 9.3 module and when running it on a ArcGIS 10.0 box it would always cause python to crash. Installed .NET SDK then added the above 2 .dll's to the GAC and the script works perfectly now...just had to change all the ref's from 9.3 tools/meta translators to the v10 paths and all is well. Sure wish the install dir's were the same with v9.3 and v10; sure makes using old scripts on v10 a hassle. thanks again ... View more

Using ArcGIS 10 SP1 I have this exact same problem with file geodatabases, (disappearing features). This happens on both pre-existing features and also features that were just digitized. I've also added several features and/or attributes, all the while continually saving my edits, only to open the feat. class a day later and everything be gone. I somewhat narrowed this problem to having ONLY arcmap open while editing, and completely closing ArcCatalog. We only use 9.x file gdb's for backwards compatibility with clients who are still using ArcGIS 9. I have a notion this is something to do with it; v9.x gdb's being edited/viewed in ArcGIS v10. Interested to see if other's having these problems are using shapefiles or gdb's; if the latter, what version of gdb? ... View more

after an hour of messing around w/ version number syntax, I found this thread! Was nice to output all layers as .lyr, but not much help when the client who will receive all the .lyr files is still using 9.3... one step forward, two steps back. ... View more

Another interesting find: When trying to modify the SAME domain from arcToolbox; "add coded value to domain", The same schema lock error is displayed......However, upon viewing the File GDB properties/domains, the coded value, WAS INFACT added to the domain, even through the schema lock error was displayed. This was the exact same behavior in ArcGIS 9.3; ArcObjects 9.3 any thoughts/comments/suggestions?? I'm puzzled! ... View more