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Can you post the rest of the code? I suspect you stepped through it and monitored all variables and parameters the first time around to make sure all is kosher? Is the first incoming geometry simple?
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04-15-2011
09:29 AM
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http://resources.arcgis.com/content/...leShow&d=30753 The workaround in this link does not work. Certainly didn't work in 9.2. 9.3, and 9.3.1. TIFF approach is the only way to produce a complex PDF containing raster data and graphics.
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04-15-2011
06:05 AM
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I often run into this problem with data from various sources. I once contacted a data provider here in Canada with a somewhat related issue and the response had to do with "...elevations readings are rounded to the nearest meter of elevation for the entire Canadian coverage..." I tend to think this is a data issue. I posted the reposnse from the data provider here: http://gis.stackexchange.com/questions/1795/where-can-i-download-1-arc-second-elevation-data-for-canada-other-than-geobase
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04-15-2011
05:58 AM
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The jagged nature of your lines could probably be smoothed, but I think your contour lines look pretty good and are probably more precise than the old topo maps. Greg Unfortunately, there is no out-of-the-box smoothing algorythm in ArcGIS that is capable of doing a good job with this. Not enough smoothing factor will just round the corners, too much will cause the contours to cross each other.
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04-15-2011
05:44 AM
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http://pubs.usgs.gov/of/2005/1428/thoms/index.html Timothy, I could not make this work in the past... Has anyone else tried?
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04-15-2011
05:25 AM
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I'm trying to create an elevation profile in 3D Analyst to scale (1:500 to be specific). The profile graph function does almost everything I need, except export a profile to scale. I can eye ball it and get the x/y porportions almost the same, but that is not good enough for my purposes. I'm generating 10-20 of these profiles and they need to overlay accurately on top of one another. Any suggestions? -Adam Its not difficult to do this programatically but I am not sure if anyone is sharing an add-in that can do this. (I made one but have no manual written for it as well as no intention to share anything without the MVP structure in place) There is an inexpensive extension by A-Prime software for ArcGIS (around $400- $500) that does this well. They offer a free full-featured trial. http://www.aprimesoftware.com/ There are other 3rd party extensions that are extremely sophisticated and offer the functionality to create geological cross sections including inclined, slices, etc. etc. but those are 1000s of $ and might be an overkill for what you need.
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04-15-2011
05:22 AM
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Terrain is great for visualizing large datasets. For cartography, simple large 3D scenes and such. You can generate contours from it and do some analysis you can do with a regular TIN. Only some of the TIN functionality (tools, volume calculations, clipping, etc, ect.) are currently available for terrains. As for hydrological analysis with the Spatial Analyst Hydrology tools you mentioned you need a raster. ts pretty straight forward procedure thereafter. If you don't have access to the source DEM you can create the raster surface from the contours. You can still convert TIN or Terrain to a raster but it's better to convert the contours to a raster directly. The original LiDAR DEM would be the best data to use.
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04-14-2011
08:00 PM
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The pdf exporter is GARBAGE. It does not mater what articles you read and what suggestions you follow for some issues there are no solutions. There have been issues with it since version 8 and the more complex it becomes the worst the problems. (If you will ever be able to create a PDF you are happy with (from a map that contains graphics or a raster), the file will be so large in size it will shock you) As Dana has already mentioned, the only way to get a nice (as well as the smallest possible in file size) PDF out of ArcMap is to export it out to a TIFF (only lossless TIFF works for me) then use Adobe Acrobat to conver that to a PDF. Only Acrobat does a good job with this because it has a fantastic rendering engine. Alternatively you can download the free Nitro PDF Express (7) which also has a good rendering engine. The Nitro PDF 6 professional DOES NOT HAVE the same engine it still uses the legacy one. The free version actually includes the new one and does a much MUCH better job with this. Export map to TIFF @ 600DPI (or so) then convert to PDF with Adobe or Nitro PDF Express. Sounds crude and simple but this is the only way to get a decent result. Initially the TIFF will be extremely large but the resulting PDF very reasonable in size while very good in image quality. Delete the TIFF when conversion is dine (conversion only takes a few seconds even for the largest files) As a final thought in my rant; even the method descried here is not 100%. I have actually experienced a problem when i use a graphic inside a label symbol that even the TIFF exported struggled with resulting in either missing or half created graphics. The solution was to not use graphic in a label or t convert your graphic to vector such as font. There are some 3rd party plugins for specifically exporting PDFs out of ArcMap. Some say they are great but the cost is in the 1000s of $. And all this is nothing compared to the issues with exporting anything out of ArcScene. I contacted ESRI's "Ask the Cartographer" who suggested stitching screenshots in phtoshop for a workaround. Go figure
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04-14-2011
06:53 PM
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that is an enormous number of vertices to triangulate a TIN from. (LiDAR 0.5m interval contours) i am not at all surprised it died. Unless you have simple contours with a larger interval avoid creating a TIN this way. You will have better success creating the TIN from the source data. You can use terrain datasets if you are not planing to edit the TIN or run some analysis. Terrain Dataset functionality is approaching that of the TIN but it is not quite there yet. It's good for visulizing large amounts of data but personally i am struggling to find a real world application for terrain datasets. For "plan view" visualization and analysis i prefer raster and for 3D work TIN. ESRI is heading in the right direction with this though.... try using just a few contours to create a TIN then create another using the source data (raster or survey points). You will notice that when using contours the resulting TIN will have a large number of triangles while not any more accurate.
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04-14-2011
06:13 PM
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I would like to utilize the "contour placement" options of "Uphill alignment" and "Laddering" while positioning the label above the contour not over it. This does not seem to be an option under the contour placement where it's forcing me to place the contour over the line. (Which makes no sense in ArcGIS since there is easy way to mask that portion of the line efficiently. Possible but very cumbersome and not dynamic) I tried the other placement options in Maplex but then "Uphill Alingment" and "Laddering" is not longer an option. Does anyone has a good way of doing this? [ATTACH=CONFIG]5960[/ATTACH] there. another GIS Stack Exchange cross post....
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04-14-2011
10:34 AM
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I found a number of ways to do this but there is an issure with the model not being georeferenced. Is there any way to georeference the model within ArcGIS? The general consensus is that it is NOT possible with the Sketchup 6 Plug-in and version 9.3.1 and older although i remember doing it myself; resizing and moving the model manually to a set of control points. (I built my model by exporting footprints and simple features from ArcGIS using the plugin along with the control points than once the model was completed i used the control points as a guide to manually geo-reference. If i remember correctly, snapping was not working so it was mostly an eyeballing exercise) In the current version 10 you can export multipatch features (TIN and Polygon features only) and it will be referenced in Sketchup. You can explode it and repair it (it will look horrid at first with faces all flipped, etc.) edit it and import it back into ArcGIS and it will still be correctly referenced. Unfortunately, you cannot export any point, or line features into sketchup. Technically, you could export these to KML but a KML created in ArcGIS does not import into Sketchup. AutoCAD files do but spatial reference will be lost. Again, for linear and point features control points (these must be polygons converted to multipatch features) and then polyline and point features can be exported to an AutoCAD format, imported into Sketchup and resized using the center point of the control points. It's just better to export surfaces to sketchup and build everything there, unless it�??s just 3D symbology like buildings and such. You will also end up with a much better looking model but this is only good for visualization.
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04-07-2011
09:48 AM
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I tried the tin with no success. Any other ideas? What was the issue with TIN? If i want to correctly display a road feature over a TIN surface I buffer the line to create a polygon that represents the road surface. I then use the road surface as a MASK to produce the Road from the TIN (1 surface) and to delete the road from the main surface (2nd TIN). This leaves me with 2 TIN surfaces; Main surface without the road and the road surface itself. Although this means more work it gives me the ability to symbolize (color) the road and the surface independently as well as apply exaggeration without any inherent display anomaly.
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04-07-2011
09:19 AM
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I've added the raster file for the area and changed the baseheights to float on a custom surface and customized that to 5 (for topography) Is the reason for "floating" the road 5m above the surface because it seems to be submerged in the surface in places? Are you exaggerating the scene? If so, that is probably the problem. The road should display properly without exaggeration otherwise the road will not render properly. I had better luck draping things over TIN rather then a raster both with and without exaggeration.
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04-06-2011
09:45 AM
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In this case you can import the sketchup model itself. By design, it will not be georeferenced.
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04-04-2011
06:52 AM
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...be able to rectify images of seismic lines vertically This sort of work can be easily done in geological/mining software such as GEMS, Surpack by Gemcom. Not sure if Target for ArcGIS by Geosoft allows you to digitize vertically from a section but i suspect so. (Be prepared for an astronomical price tag, especially for Gemcom software.) GEMS also allows you to geo-reference and digitize on inclined sections. I would love to have this functionality in ArcGIS and hoping someone will write an add-on for this soon. All the ingredients are there...
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03-31-2011
12:15 PM
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