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Say you have some DEM data, a raster where each pixel represents the elevation of that pixel. You load it into ArcMap, and it would generally default to a gray scale image (black to white colour ramp). If you want to send someone a "picture" if the data, rather than the data itself, you can apply another colour ramp (maybe Elevation 2 or something), maybe use a graphic to cut out a small section, if you right click on the dem and select data / export, then click the Use renderer & force RGB, the exported raster is now a 3 band (RGB) image of the original. Original gray scale raster. New colour ramp. RGB image output.
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01-25-2017
04:21 AM
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<Columns_and_Rows> 30001, 28766 <Number_of_Bands> 3 <Cell_Size__X._Y_> 0.013888889, 0.013888889 <Uncompressed_Size> 2.41 GB <Format>TIFF <Source_Type>Generic <Pixel_Type>unsigned integer <Pixel_Depth>8 Bit <Colormap>absent <Pyramids>level: 7, resampling: Nearest Neighbor <Compression>LZW <Mensuration_Capabilities>Basic <Status>Permanent <Extent><Top> 399.527777778 <Left> 0 <Right> 416.680555556 <Bottom> 0 <Spatial_Reference>WGS_1984_Web_Mercator_Auxiliary_Sphere That, to me, looks like this tif hasen't been georeferenced at all, just defined as Web Merc
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01-22-2017
11:26 PM
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It is common in river research to define sinuosity as a ratio of channel length over straight line distance. See here : sinuosity But in terms of roads, I agree with jborgion Rather look for better evidence of what constitutes "dangerous".
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01-20-2017
11:54 PM
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In answer to your first question a gdb (a file geodatabase), is a container for many features classes, tables etc etc. So no, you don't need multiple gdb's 1 for each feature. Try looking through this : manage-data/main/what-is-geodata
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01-18-2017
03:49 AM
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Take the output table from Poly Neighbor and summarise it using Analysis tools / Summary statistics. For every scr, you can count numbers of nbr. Those where count = 1 are the ones you want.
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01-18-2017
03:38 AM
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An island polygon, if I get your drift, would have only 1 neighbour
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01-18-2017
02:17 AM
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Have you looked at the Polygon Neighbour tool, available at all licence levels. analysis-toolbox/polygon-neighbors
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01-18-2017
02:16 AM
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Couldn't you just publish that mxd you have now, with all three services in it?
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01-16-2017
11:43 PM
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Have you looked at the surface volume tool? surface-volume
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01-16-2017
10:23 PM
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Use the geometry method projectAs like : geom2 = geom1.projectAs(newSr) # newSr is a spatial reference object
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01-16-2017
10:17 PM
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Download Notepad++, very handy, will open almost any textfile no matter how big. But if the problem has gone away (at least for now....), then everything is moot. Good luck. N
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01-15-2017
11:22 PM
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You may want to move this thread to Coordinate systems or somewhere. Might get more visibility then where it is now.
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01-12-2017
12:48 AM
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Yes, I realise that wkid 43041 is a projection type rather than a fully formed PCS. So, you need to set one up perhaps centred on the middle of your project area. If you save it in favourites, you can find the prj in userbanme/appdata etc etc. Open that up with a text editor, then copy it into your python script. Becareful to surround the entire string with single quotes (all the internal ones are double quotes). Then edit the string to put the formatting placeholders "{}" at the places you require. Then you're good to go.
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01-10-2017
10:47 PM
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According to EPSG.. Wkid 4674 is called SIRGAS2000 (and uses the ITRF200 epoch). 4170 is called SIRGAS1995 (and uses ITRF 1994). I would say that both are "functionally equivalent" to WGS84. Unless your data is extraordinarily accurate, I don't think you will see any miss-alignment between them.
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01-10-2017
08:46 AM
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Some excellent links provided by Dan Patterson What have you tried so far and what makes you say that the result was "not that good"? I also think a few pictures helps. So here is an old esri pdf on interpolation.
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01-10-2017
03:01 AM
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