analysis grid superimposed 2d street grid calculating travel-time …vector to raster conversion...
TRANSCRIPT
![Page 1: Analysis grid superimposed 2D Street Grid Calculating Travel-Time …vector to raster conversion Note that a 100 row by 100 column analysis grid (10,000](https://reader035.vdocument.in/reader035/viewer/2022070306/5517701a55034645368b4c00/html5/thumbnails/1.jpg)
Analysis grid superimposed
2D Street Grid
Calculating Travel-Time…vector to raster conversion
Note that a 100 row by 100 column analysis grid (10,000 cells) is superimposed on the street data and those cells containing a road are assigned a friction value representing the typical time to traverse each location– primary streets (red) = 8.5 seconds; secondary streets (blue) = 25.5 seconds.
![Page 2: Analysis grid superimposed 2D Street Grid Calculating Travel-Time …vector to raster conversion Note that a 100 row by 100 column analysis grid (10,000](https://reader035.vdocument.in/reader035/viewer/2022070306/5517701a55034645368b4c00/html5/thumbnails/2.jpg)
2D Street Grid
3D Street Grid
Calculating Travel-Time…street types as relative barriers
Note that the street pattern can be displayed as 2D and 3D plots. The street pattern can be conceptualized as a canal network that connects Kent’s Emporium to its customers.
Kent’s Emporium
![Page 3: Analysis grid superimposed 2D Street Grid Calculating Travel-Time …vector to raster conversion Note that a 100 row by 100 column analysis grid (10,000](https://reader035.vdocument.in/reader035/viewer/2022070306/5517701a55034645368b4c00/html5/thumbnails/3.jpg)
2D TTime_0-10
3D TTime_0-10
Calculating Travel-Time…”splash” 0-10 cells = 0 to 1.4 minutes
Base cell = 8.5sec = .1424min
Note that the distance “waves” begin to move away from Kent’s Emporium along the “canal” pattern (streets) like ripples from a rock tossed into the water. The distance waves accumulate the time it takes to cross each grid cell– considering the relative impedance for primary (8.5sec) and secondary (25.5sec) streets.
![Page 4: Analysis grid superimposed 2D Street Grid Calculating Travel-Time …vector to raster conversion Note that a 100 row by 100 column analysis grid (10,000](https://reader035.vdocument.in/reader035/viewer/2022070306/5517701a55034645368b4c00/html5/thumbnails/4.jpg)
2D TTime_0-20
3D TTime_0-20
Calculating Travel-Time…0-20 cells = 0 to 2.8 minutes
Base cell = 8.5sec = .1424min
![Page 5: Analysis grid superimposed 2D Street Grid Calculating Travel-Time …vector to raster conversion Note that a 100 row by 100 column analysis grid (10,000](https://reader035.vdocument.in/reader035/viewer/2022070306/5517701a55034645368b4c00/html5/thumbnails/5.jpg)
2D TTime_0-30
3D TTime_0-30
Calculating Travel-Time…0-30 cells = 0 to 4.3 minutes
Base cell = 8.5sec = .1424min
![Page 6: Analysis grid superimposed 2D Street Grid Calculating Travel-Time …vector to raster conversion Note that a 100 row by 100 column analysis grid (10,000](https://reader035.vdocument.in/reader035/viewer/2022070306/5517701a55034645368b4c00/html5/thumbnails/6.jpg)
2D TTime_0-40
3D TTime_0-40
Calculating Travel-Time…0-40 cells = 0 to 5.7 minutes
Base cell = 8.5sec = .1424min
![Page 7: Analysis grid superimposed 2D Street Grid Calculating Travel-Time …vector to raster conversion Note that a 100 row by 100 column analysis grid (10,000](https://reader035.vdocument.in/reader035/viewer/2022070306/5517701a55034645368b4c00/html5/thumbnails/7.jpg)
2D TTime_0-50
3D TTime_0-50
Calculating Travel-Time…0-50 cells = 0 to 7.1 minutes
Base cell = 8.5sec = .1424min
![Page 8: Analysis grid superimposed 2D Street Grid Calculating Travel-Time …vector to raster conversion Note that a 100 row by 100 column analysis grid (10,000](https://reader035.vdocument.in/reader035/viewer/2022070306/5517701a55034645368b4c00/html5/thumbnails/8.jpg)
2D TTime_0-60
3D TTime_0-60
Calculating Travel-Time…0-60 cells = 0 to 8.5 minutes
Base cell = 8.5sec = .1424min
![Page 9: Analysis grid superimposed 2D Street Grid Calculating Travel-Time …vector to raster conversion Note that a 100 row by 100 column analysis grid (10,000](https://reader035.vdocument.in/reader035/viewer/2022070306/5517701a55034645368b4c00/html5/thumbnails/9.jpg)
2D TTime_0-70
3D TTime_0-70
Calculating Travel-Time…0-70 cells = 0 to 10.0 minutes
Base cell = 8.5sec = .1424min
![Page 10: Analysis grid superimposed 2D Street Grid Calculating Travel-Time …vector to raster conversion Note that a 100 row by 100 column analysis grid (10,000](https://reader035.vdocument.in/reader035/viewer/2022070306/5517701a55034645368b4c00/html5/thumbnails/10.jpg)
2D TTime_0-80
3D TTime_0-80
Calculating Travel-Time…0-80 cells = 0 to 11.4 minutes
Base cell = 8.5sec = .1424min
![Page 11: Analysis grid superimposed 2D Street Grid Calculating Travel-Time …vector to raster conversion Note that a 100 row by 100 column analysis grid (10,000](https://reader035.vdocument.in/reader035/viewer/2022070306/5517701a55034645368b4c00/html5/thumbnails/11.jpg)
2D TTime_0-90
3D TTime_0-90
Calculating Travel-Time…0-90 cells = 0 to 12.8 minutes
Base cell = 8.5sec = .1424min
![Page 12: Analysis grid superimposed 2D Street Grid Calculating Travel-Time …vector to raster conversion Note that a 100 row by 100 column analysis grid (10,000](https://reader035.vdocument.in/reader035/viewer/2022070306/5517701a55034645368b4c00/html5/thumbnails/12.jpg)
2D TTime_0-100
3D TTime_0-100
Calculating Travel-Time…0-100 cells = 0 to 14.2 minutes
Base cell = 8.5sec = .1424min
![Page 13: Analysis grid superimposed 2D Street Grid Calculating Travel-Time …vector to raster conversion Note that a 100 row by 100 column analysis grid (10,000](https://reader035.vdocument.in/reader035/viewer/2022070306/5517701a55034645368b4c00/html5/thumbnails/13.jpg)
2D TTime_0-110
3D TTime_0-110
Calculating Travel-Time…0-110 cells = 0 to 15.7 minutes
Base cell = 8.5sec = .1424min
![Page 14: Analysis grid superimposed 2D Street Grid Calculating Travel-Time …vector to raster conversion Note that a 100 row by 100 column analysis grid (10,000](https://reader035.vdocument.in/reader035/viewer/2022070306/5517701a55034645368b4c00/html5/thumbnails/14.jpg)
2D TTime_0-120
3D TTime_0-120
Calculating Travel-Time…0-120 cells = 0 to 17.1 minutes
Base cell = 8.5sec = .1424min
![Page 15: Analysis grid superimposed 2D Street Grid Calculating Travel-Time …vector to raster conversion Note that a 100 row by 100 column analysis grid (10,000](https://reader035.vdocument.in/reader035/viewer/2022070306/5517701a55034645368b4c00/html5/thumbnails/15.jpg)
2D TTime_0-130
3D TTime_0-130
Calculating Travel-Time…0-130 cells = 0 to 18.5 minutes
Base cell = 8.5sec = .1424min
![Page 16: Analysis grid superimposed 2D Street Grid Calculating Travel-Time …vector to raster conversion Note that a 100 row by 100 column analysis grid (10,000](https://reader035.vdocument.in/reader035/viewer/2022070306/5517701a55034645368b4c00/html5/thumbnails/16.jpg)
2D TTime_0-140
3D TTime_0-140
Calculating Travel-Time…0-140 cells = 0 to 20.0 minutes
Base cell = 8.5sec = .1424min
![Page 17: Analysis grid superimposed 2D Street Grid Calculating Travel-Time …vector to raster conversion Note that a 100 row by 100 column analysis grid (10,000](https://reader035.vdocument.in/reader035/viewer/2022070306/5517701a55034645368b4c00/html5/thumbnails/17.jpg)
2D TTime_0-150
3D TTime_0-150
Calculating Travel-Time…0-150 cells = 0 to 21.4 minutes
Base cell = 8.5sec = .1424min
![Page 18: Analysis grid superimposed 2D Street Grid Calculating Travel-Time …vector to raster conversion Note that a 100 row by 100 column analysis grid (10,000](https://reader035.vdocument.in/reader035/viewer/2022070306/5517701a55034645368b4c00/html5/thumbnails/18.jpg)
2D TTime_0-160
3D TTime_0-160
Calculating Travel-Time…0-160 cells = 0 to 22.8 minutes
Base cell = 8.5sec = .1424min
![Page 19: Analysis grid superimposed 2D Street Grid Calculating Travel-Time …vector to raster conversion Note that a 100 row by 100 column analysis grid (10,000](https://reader035.vdocument.in/reader035/viewer/2022070306/5517701a55034645368b4c00/html5/thumbnails/19.jpg)
2D TTime_0-170
3D TTime_0-170
Calculating Travel-Time…0-170 cells = 0 to 24.2 minutes
Base cell = 8.5sec = .1424min
![Page 20: Analysis grid superimposed 2D Street Grid Calculating Travel-Time …vector to raster conversion Note that a 100 row by 100 column analysis grid (10,000](https://reader035.vdocument.in/reader035/viewer/2022070306/5517701a55034645368b4c00/html5/thumbnails/20.jpg)
2D TTime_0-180
3D TTime_0-180
Calculating Travel-Time…0-180 cells = 0 to 25.6 minutes
Base cell = 8.5sec = .1424min
![Page 21: Analysis grid superimposed 2D Street Grid Calculating Travel-Time …vector to raster conversion Note that a 100 row by 100 column analysis grid (10,000](https://reader035.vdocument.in/reader035/viewer/2022070306/5517701a55034645368b4c00/html5/thumbnails/21.jpg)
Results displayed in a Desktop Mapping system (raster to vector)
2D TTime_0-180
Calculating Travel-Time…0-180 cells = 0 to 25.6 minutes
Base cell = 8.5sec = .1424min
Note that of the 10,000 cells comprising the analysis grid, 4123 do not contain a road. Of the 5877 cells with a road, 3014 locations (a little over 50 percent) are 0 to 70 effective cells away, or about 10 minutes from Kent’s Emporium (non-shaded area of the summary table)
![Page 22: Analysis grid superimposed 2D Street Grid Calculating Travel-Time …vector to raster conversion Note that a 100 row by 100 column analysis grid (10,000](https://reader035.vdocument.in/reader035/viewer/2022070306/5517701a55034645368b4c00/html5/thumbnails/22.jpg)
Calculating Travel-Time
For more discussion on travel-time calculation and its applications, visit…
www.innovativegis.com/basis
…educational software for hands-on experience in creating and using travel-time maps and other grid-based map analysis
…online book discussing travel-time concepts, procedures and considerations (Topics 5, 6, 13,14 and 17), as well as other grid-based analysis techniques
…also see Papers/Presentations Online Papers, select “Understanding Effective Distance and Connectivity”