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H_MNaqvi
Deactivated User
since
06-18-2015
11-11-2020
3
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My Ideas
(0 Idea Submissions)Latest Contributions by H_MNaqvi
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Thanks for furnishing reply on cell size of kernel density map. My next question is as follows: I have to analyse traffic accident data in order to investigate the density of crashes(point events). A standard (planar) Kernel Density Estimation (KDE) produce a smooth density surface of spatial point events over a 2-D geographic space. However, the planar KDE may not be suited for analysis road crashes (events), which usually occur inside a linear space. Does anyone have suggestion how to plot network kernel density estimation for traffic accident data using ArcGIS tools? Thanks in advance. email: naqvihm@gmail.com
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06-21-2015
10:10 PM
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Thanks for prompt reply. My crash data (latitude and longitude) are in degree and decimal. I used GCS->World->WGS43.Similarly for projected coordinate system is also taken as Northern hemisphere->WGS43. While making kernel density one is required to give search radius and Output cell size, these two items are to be given in metres or kilometres etc. May I request you to send your valuable inputs on the same.
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06-19-2015
05:16 AM
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I wish to plot Kernel Density Map for geo-referenced rural road crashes in ArcMap 10 (using Spatial Analyst Tools->Density->Kernel Density-Dialogue box pops up to enter data). I found that the "Output Cell size" and "Search Radius" by default the ArcGIS software is taking for plotting Kernel density Map for road crashes is very small say 0.001 metre(m) and 0.01 m respectively, which is small to conclude inferences from the plotted kernel density maps. When I change"output cell size" and "radius" in the Dialogue box to larger values say 5 m and 50 m respectively, ArcGIS does NOT plot the kernel density map and show error. Could anyone help me to diagnose the problem in plotting kernel density maps for road crashes. Secondly I also request the esteemed members to write steps or procedure to carry out Network Density Estimation using ArcGIS as Kernel Density estimation is planar based and not popular in analysing highway crashes. Thanking you in advance. Reply to the cited query may be posted at my email account: naqvihm@gmail.com H. M. Naqvi
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06-19-2015
12:08 AM
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My kudoed posts
| Title | Kudos | Posted |
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| 1 | 06-19-2015 12:08 AM |
Activity Feed
- Got a Kudo for Regarding creation of Kernel Density Map in ArcGIS. 10-13-2017 04:33 PM
- Posted Re: Regarding creation of Kernel Density Map in ArcGIS on ArcGIS Network Analyst Questions. 06-21-2015 10:10 PM
- Posted Re: Regarding creation of Kernel Density Map in ArcGIS on ArcGIS Network Analyst Questions. 06-19-2015 05:16 AM
- Posted Regarding creation of Kernel Density Map in ArcGIS on ArcGIS Network Analyst Questions. 06-19-2015 12:08 AM
- Tagged Regarding creation of Kernel Density Map in ArcGIS on ArcGIS Network Analyst Questions. 06-19-2015 12:08 AM
- Tagged Regarding creation of Kernel Density Map in ArcGIS on ArcGIS Network Analyst Questions. 06-19-2015 12:08 AM
- Tagged Regarding creation of Kernel Density Map in ArcGIS on ArcGIS Network Analyst Questions. 06-19-2015 12:08 AM
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11-11-2020
02:25 AM
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