Latest Contributions by DougWolfinger2

I am delineating a watershed and have produced a stream order raster. I used the Stream Order tool with a stream link raster as the input stream raster and the flow direction raster as the input flow direction raster. As you can see in the screenshots. The second screen shot is to show the outlet point and the selection of all the #1's. Why has it grouped so many streams that seem to be of a different order into #1?      ... View more

I need to copy some fields from one shapefile to another existing one, preferably using Arcpy. Below is my code that checks for common fields between two shapefiles. Can I use this and add code to copy the fields that are not already in the destination shapefile from the original? What function will do that for me? I do not want data to transfer over--just the fields. Thank you! >>>#FIELDS is the list of fields from the shapefile to copy from #FIELDS2 is the list of fields already in the shapefile to copy to fields = arcpy.ListFields("G:/Working Folder/Backup.gdb/PubData_RoadCenterlines") ... fields2 = arcpy.ListFields(r"G:\Data\External\Fairfield_County\Dupage_Centerlines_Web_Mercator_1984.shp") ... namelist = [] ... namelist2 = [] ... x = 0 ... y = 0 ... for field in fields: ...    #populate NAMELIST[] with FIELDS  namelist.append(field.name) ...   #check the to shapefile for fields it already has and are common with the from shapefile for field2 in fields2: ...         namelist2.append(field2.name) ...         if namelist2 == namelist : ...             print namelist + "is common between the two shapefiles" ...        x+=1 ...     y+=1 ... View more

Hello I have georeferenced a map and rectified it as a tiff file. I resized the terrain in the map, so I saved it as a jpg and intend to overlay it onto the georeferenced tiff. This will enable me to measure the difference in size of the terrain between the original map (tiff file) and the new one. It will save time since the additional area is much smaller than the area of the whole terrain. When I add the new map to the same view the old one already occupies, and select Fit to Display, the old one disappears. Then I select Fit to Display for old map and that makes the new one disappear. How can I do this? Thanks ... View more

I am trying to georeference a jpg image of a map in ArcMap 9.3. Here's the process: I add the spatially referenced data first, then add the jpg raster. The lon/lat coordinates are still correct at this point. But the jpg is not in the view yet because the view is zoomed out to the full extent. The vector is global data of Mars, and the jpg map is just one small region. So I click Zoom to Layer to make the jpg appear. It appears, but this is when the lon/lat coordinates are thrown way off. For instance, in decimal degrees, lon=20E, lat=20N will become something like lon=0.00136, lat=0.002302. I want to zoom into the jpg and use Fit To Display on the vector to get the two to be about the same proportions in the data view before I start setting control points. What am I doing wrong? Thanks! ... View more