I am a novice to arcgis 10 so please forgive my ignorance.I have this 2000 survey points shapefile and I was told to , I guess is dislocate, generate new survey points, each new should be 500m west and 500m south from the original point. How can I do that in arcgis 10? I remember there use to be in a move button, but I canot find it now. Can you help me?
How precise do you need to be? Does it have to be exactly 500.0m South + 500.0 m West, or can you eyeball it?
If you can eyeball it, the easiest way is just to turn on Editor mode:
Then select all your points and drag them towards the southwest roughly 500.0*sqrt(2)=707.1m.
Alternatively if you want to move all points precisely 500.0m South and 500.0m West:
- Take an existing point, copy and paste it.
- Select the copied point and right-click > Edit Vertices, right-click > Move. Type in 500.0 by 500.0.
This extra point will be used as an anchor point. Select all your points and, with your mouse on the original point, drag it and Snap it to the anchor point.
Snapping behavior is controlled by a separate toolbar.
You can delete the extraneous anchor point when you're done. This should get you pretty precise.
You can do it with field calculator using Python parser:
Create a copy of your file
Open table, select shape field, switch to advanced mode type:
def pMove(shp): pM=arcpy.Point() p=shp.firstPoint pM.X=p.X-500 pM.Y=p.Y-500 return pM
in the box below type:
This is good place to learn about field calculator http://help.arcgis.com/EN/arcgisdesktop/10.0/help/index.html#//005s0000002m000000