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I'm working on a large dataset with streets-lines, buildings-polygons and zones-polygons feature classes and would like to use the inspector window to deal with fixing the topology errors instead of just eyeing everything. I've found the topology rule, "Must not overlap with" but when I select my streets layer it won't let me bring up the buildings layer to show what streets are overlapping what buildings and vice versa. Is there another rule I need to use for this or is there just not one for this problem?
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09-08-2014
02:04 PM
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Ok, so I THINK I figured out how to fix this. The coordinate system in the National Atlas roads shapefile was already projected when I got it I think. So I just redefined the coordinate system to a geographic one (WGS 1984) and then reprojected that file to the Maryland Harn 1983 one. Now they all line up great . I am wondering though if this was just a quick fix that could cause problems later or if this was really all I needed to do finally.
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08-06-2014
08:37 AM
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Oh yeah, I forgot to mention that it takes 7-zip to open up the tz folder in the national atlas site.
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08-05-2014
03:23 PM
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I got the road shapefile from the US census website. It's the national file for primary roads. I also got the states file from the same place and managed to get these two to line up. The other roads file I got was from the government's national atlas website here: Global Map Data Download under roads-global map, the shapefile. I checked the metadata but it didn't leave me much to go on.
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08-05-2014
03:14 PM
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Yeah, that worked. Thanks for the help. But now I'm having problems getting a couple of my other shapefiles to line up with my density shapefile. I probably should have mentioned this earlier but these are the shapefiles I'm working with at the moment: - geocoded point density - US States polygon - roads line - another roads line file I just reprojected my states, roads and other roads files to match up with my point density file but the roads files don't show up when I add them to my map. I double checked and everything has the same Maryland HARN CRS now, even the data frame but for some reason these two won't line up. Ugh! it's been one step forward two steps back with this thing all day.
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08-05-2014
01:47 PM
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I just tried that and it got my scale bar working like normal again but now I can't change my area units when I try to do a kernel density analysis.
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08-05-2014
12:13 PM
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Hi Ian, I tried doing that but it didn't work. My scale bar still read .0005 miles for the width of Virginia. Would having my shapefiles/feature classes in a geodatabase be part of the problem? I did eventually get something to work but only after I exported one of my feature classes to a folder in explorer and reprojected it to NAD_1983_HARN_StatePlane_Maryland_FIPS_1900_Feet. When I made a new arcmap document and set it as the first layer everything was fine.
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08-05-2014
11:43 AM
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So, I'm trying to create a kernel density map with some point data I geocoded from some FARS tables on vehicle accidents around the DC beltway area but I'm having trouble getting the map units and scale bar to work at the same time. I first tried leaving the shapefile as it was originally projected in the GCS_North_American_1983 CRS but I couldn't get the map units in the kernel densisty dialogue box to show anything in km, m, miles, etc. It just showed up as map_units and I couldn't change anything. Then I tried defining the projection as maryland state plane, which let me use the correct map units of meter that I wanted but when I went to put a scale bar in the main map the numbers were way off. It was showing the whole area of DC as like .0005 miles or something crazy like that? Then I tried using the project tool to see if that would change anything but the scale bar was still weird. What am I doing wrong?
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08-05-2014
09:06 AM
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