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luckily one of our licenses is for advanced, so I just tried it and it did the trick. thank you for the fast responses. adding this to my notes.
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01-27-2016
08:18 AM
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I have a polygon shapefile that represents a large body of water. I have a separate polygon shapefile that represents all the islands within that water polygon. I tried to merge them but that just puts one on top of the other. what I need is to basically chop out the islands from the water so I end up with a file that's nothing but water. I've looked through the tools but I'm not sure which one is appropriate.
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01-27-2016
07:37 AM
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I think so. my understanding of it I think sounds a lot more strict than it needs to be. I guess I'll find out when I get to that point. thanks.
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11-20-2015
05:39 AM
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since I'm drawing multiple lines that will eventually be a polygon, I was assuming that even if you snap the ends together, its still not going to consider it a closed polygon. a "break" being where one line starts and one ends, regardless of weather there is space between the lines or the vertices are snapped to be on top of each other. I figured it would not automatically fuse those together into one continuous line, it would still be two vertices sitting on top of each other. I'm not sure how else to explain it. my nomenclature is more to do with 3d modeling. if I was drawing lines in a 3d modeling program, and wanted to join them, I'd snap the ends together and weld the two vertices into one. I'm asking how I would accomplish the same thing in this app, so the polygon is truly closed and not just a lot of connected lines.
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11-20-2015
05:25 AM
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how do I merge the two endpoint verticies into a single vertex to assure there is no break in the line? the dissolve joined the two lines, but doesn't do anything about the break, even with one snapped to the other beforehand, as best I can tell.
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11-19-2015
11:10 AM
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I left everything unchecked and it did as directed, so that's one step down.
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11-19-2015
11:09 AM
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I'm drawing the shoreline based on imagery. I can't zoom way out because there would be too much loss of detail. I'm talking about thousands of miles of shoreline. it needs to match the shoreline pretty closely, not just an approximation, so I have to get in pretty close, which is going to mean hundreds of segments.
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11-19-2015
10:57 AM
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I tried the dissolve tool on my test data and it just deleted one of the two segments, rather than merging them. I used the objectid to merge on.
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11-19-2015
10:55 AM
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I have to draw a polygon around a very large area of water consisting of many islands and shoreline. its far too large to draw in one shot, so I figured I'd have to draw many vectors as I go, then merge the vectors into a single one and fuse the endpoints of the lines into a single continuous line, that would eventually consist of a single polygon enclosing the body of water. the problem is I don't know enough about the tools in this regard to actually do it. I tried drawing a couple of shapefiles, then merged them together, but the attribute table still treats them as two separate lines, rather than one, and digging around in the help files and knowledge base hasn't shown me how to do that, probably because I don't know the right wording. so to break it down, I need to: 1. draw many vector lines 2. merge them into a single vector line 3. make sure there are no breaks in the lines where the multiple lines were merged together. 4. turn the line into a polygon, accounting for negative spaces where there are islands. I assume I can draw a polygon around the islands and merge multiple polygons together and flag them as empty space, somehow. thanks for any help. Tim
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11-19-2015
10:35 AM
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I'm stuck in a weird situation and trying to find a solution. I'm not familiar with 3D Analyst at all, but some searches seem to suggest that there is a slight possibility that it may do what I want. the issue: I have a request to insert a chunk of artifical terrain into a piece of real geography with real world coordinates. The only way I could think to blend this seamlessly was to convert it to 3d models in 3D Studio Max, and edit them together. The resultant output needs to be also in DEM format, and a 16bit grayscale image. the huge glaring problem: I have no idea how to take that resultant 3d model and convert it. All the software I'm familiar with is a one way pipeline. I can't see a way to solve this. I thought maybe if I could take that mesh and someone convert it into a TIN, possibly 3d analyst could then use that to create the final output. But there is that tricky first step of creating a tin out of my 3d model. I thought maybe I could take two grayscale images and edit them together in Photoshop but that doesn't work either as there is simply no way to get it to blend without a thousand iterations. Am I hosed, or is there a way? I am totally stuck.
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09-17-2012
09:40 AM
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