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Hi Mohamed. Thanks for your suggestion to use the Calculate Geometry function on the coordinate values of my coordinate table to get the correct ones. It solved my problem. I am aware of the accuracy problem with non-professional GPS receivers (and perhaps with professional ones too, but I don't have one) but my personal experience is that if there is a clear view of the sky and I wait long enough for the GPS unit to lock onto a position, the accuracy is very good. Unfortunately, for this project there was a lot of overhead tree cover that caused problems in getting a good reading. Ralph
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09-13-2014
05:39 PM
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Hi Riyas, I want to thanks you for your suggestion to use the Calculate Geometry function to get the correct coordinates in my attribute table. It was exactly what I needed. You were very helpful and solved my problem. Ralph
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09-13-2014
05:28 PM
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Hi Riyas. Thanks you for replying to my question. Using the identify tool gives me the coordinate values in the Attribute Table, which are not always accurate. Here is some more background. I am trying to place about 70 trees on a map for a small botanical garden. I took coordinates of the trees using a good but non-professional Garmin GPS unit, added them to a map (it has a very good aerial image) as x,y values, then exported that as a feature class. Most of the trees were in the right place, but 10 or so were not due to poor conditions -- there was heavy leaf cover overhead. So I began an edit session and manually moved the tree symbols to the right positions. Because of the good aerial image, they can be moved to the right places. However, moving the tree symbols manually didn't change the values in the Attribute Table, and I would like accurate coordinates for all of the trees. So I was hoping that pointing to the new position of the trees that I moved and noting the coordinates on the status bar would give me accurate coordinates. However, it didn't. Ralph
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09-07-2014
12:09 PM
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This is from a beginner using ArcMap 10. When I take the coordinates of a point on my map as given in the status bar and input them into "Goto X,Y" the result is a point about 30 miles south of my map. Does anyone have any idea why the coordinates in the status bar cause this? Thanks to anyone for your help.
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09-05-2014
05:33 PM
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