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hey, thanks again!! I've managed to figure out a way to combine the slope values with the streets. So next I've tried to run the network analysis without the slope cost to see if it would work. I'm trying to work out the service areas for different bus stops in several smaller towns/villages. For some reason it seems like the analysis is ignoring several streets in the analysis, thus shaping the polygons completely wrong. I've added a screenshot of the areas in question. My second question is regarding the slope cost. At what point do I add these costs to the analysis?? When I'm creating the network dataset? Or do i do this once I've created the dataset somehow? Sorry for all these questions, but this is the first time I've worked with network analysis... Thanks, Markus[ATTACH=CONFIG]11556[/ATTACH]
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01-31-2012
05:01 AM
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hey, I already found a (pretty complicated) way to solve the issue. Thanks again for your help! 🙂
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01-30-2012
03:47 AM
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Hey Chris, Thanks for your quick answer! I still have a problem when trying to figure out how to calculate the rise from the different elevation values of the points. Is there a quick way to calculate the elevation difference between start- and endpoints? I've joined the Sample table with the vertices shapefile so far. Also, once I'm done with that, do i calculate the slope values with the field calculator in the attribute table? I've tried using the Raster calculator, but that one won't accept anything besides raster files (hence the name of the tool i guess) Thanks, Markus
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01-30-2012
01:19 AM
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Hi, I'm trying to combine slope values with street features in order to use them as a cost factor for a network analysis. I've got a DEM10 and calculated the slopes in degree with the slope tool. Alexey from Network Analysis gave me the following tips: -reclassify the slope file -use raster to feature (polygon) after that But I don't know if it makes sense to reclassify, convert to feature and use the intersect tool to combine the slope polygonswith the street features. The problem i see with this is that the streets will oftentimes go alongsides the slope and not directly up the hill. But the street features will still get th values of the slope for the specific polygon even if the slope doesn't run in the direction of the street itself. I've tried to go another way by: normal DEM -> convert to integer -> raster to feature (polygon) -> intersect with street features -> convert back to raster -> calculate the slope for that file. I'm getting really weird results for that tho... Which way do you think makes more sense?? Thanks in advantage, Markus
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01-28-2012
06:26 AM
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Hi Alex, thanks a lot for your quick answer. I have a DEM10 and calculated the slope in percent with the slope tool. My only remaining problem is that i have failed to find a tool to link the values to the road features. The "road link" you suggested doesn't seem to exist.. 😞 Thanks, Markus
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01-28-2012
02:17 AM
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Hi, I'm trying to make a network analysis containing the time that is needed walking from one point to another. The thing is that i want to include slope, distance and walking speed in this analysis. Distance and walking speed shouldn't be too big of a problem, but I have no idea how to include the slope into the whole cost analysis. Is there a way to combine the street features of the base map that I'm using with the slope "cost" before the network analysis or is there a way to do this while doing the analysis? Thanks in advantage, Markus
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01-27-2012
06:17 AM
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