NCSU GIS/MEA582:
Geospatial Modeling and Analysis

Data models

Resources: ESRI virtual campus

Create the folder assign2 in your preferred workspace, in the instructions below we are using C:\Users\myname\arcdata\assign2.

Include resulting maps into your report (use your judgement to decide which results to include).

Find all used tools in Toolbox Window or use Search window.

Convert Data from Raster to Raster: change resolution

Compare resampling by nearest neighbor for discrete and continuous raster maps:

File > Add Data > Add Data...
select ncrast.mdb/elev_ned
select ncrast.mdb/landcl96

Select 'Data Management Tools->Raster->Raster Processing->Resample'
Set 'Input Raster' to 'landcl96'
Set 'Output raster' to 'C:\Users\myname\arcdata\assign2\landcl_10m'
Set 'Output Cell Size' to 10
Set 'Resampling Technique' to 'NEAREST'
Click 'OK'

Select 'Data Management Tools->Raster->Raster Processing->Resample'
Set 'Input Raster' to 'elev_ned'
Set 'Output raster' to 'C:\Users\myname\arcdata\assign2\ned_10m_nn'
Set 'Output Cell Size' to 10
Set 'Resampling Technique' to 'NEAREST'
Click 'OK'

Check the resampled elevation surface using the aspect map:

Check out a Spatial Analysis Extension license: Customize Menu->Extensions

Select 'Spatial Analyst Tools->Surface->Aspect'
Set 'Input Surface' to 'ned_10m_nn'
Set 'Output raster' to 'C:\Users\myname\arcdata\assign2\aspect_10m_nn'
Click 'OK'

Reinterpolate DEMs (continuous raster data) using bilinear and bicubic interpolation:

Select 'Data Management Tools->Raster->Raster Processing->Resample'
Set 'Input Raster' to 'elev_ned'
Set 'Output raster' to 'C:\Users\myname\arcdata\assign2\ned_10m_bi'
Set 'Output Cell Size' to 10
Set 'Resampling Technique' to 'BILINEAR'
Click 'OK'

Select 'Data Managemnt Tools->Raster->Raster Processing->Resample'
Set 'Input Raster' to 'elev_ned'
Set 'Output raster' to 'C:\Users\myname\arcdata\assign2\ned_10m_bc'
Set 'Output Cell Size' to 10
Set 'Resampling Technique' to 'CUBIC'
Click 'OK'

Check the interpolated elevation surface using aspect maps:

'Spatial Analyst Tools->Surface->Aspect'
Set 'Input Surface' to 'ned_10m_bi'
Set 'Output raster' to 'C:\Users\myname\arcdata\assign2\aspect_10m_bi'
Click 'OK'

'Spatial Analyst Tools->Surface->Aspect'
Set 'Input Surface' to 'ned_10m_bc'
Set 'Output raster' to 'C:\Users\myname\arcdata\assign2\aspect_10m_bc'
Click 'OK'

Resampling to lower resolution (downscaling) for continuous field data:

Select 'Spatial Analyst Tools->Generalization->Aggregate'
Set 'Input raster' to 'elev_ned'
Set 'Output raster' to 'C:\Users\myname\arcdata\assign2\el_90m_mean'
Set 'Cell factor' to 3
Set 'Aggregation technique' to 'MEAN'
Click 'OK'

Resampling to lower resolution (downscaling) for discrete categories:

Select 'Data Management' Tools-> Raster -> Raster Processing -> Resample'
Set 'Input raster' to 'landcl96'
Set 'Output raster' to 'C:\Users\myname\arcdata\assign2\landcl_mode'
Set 'X' and 'Y' to 90
Set 'Resampling technique' to 'MAJORITY'
Click 'OK'

Convert Data from Vector to Raster using a working region

Select 'File->Add Data->Add Data...'
Select ./ncshape.mdb/geology
Select ./ncshape.mdb/swwake_10m

Select 'Conversion Tools->To Raster->Polygon To Raster'
Set Input Features to '.\ncshape.mdb\geology'
Set Value Field to 'GEO_NAME'
Set Output Raster Dataset to 'C:\Users\myname\arcdata\assign2\rast_geo'
Set Cellsize to 30
Leave the remaining fields as their defaults

Adjust the working region:

Click 'Environments...' button (bottom of dialog)
Under 'Processing Extent' Set the 'Extent' to 'Same as layer .\ncshape.mdb\swwake_10m'
Click 'OK'
Click 'OK'

Convert SW Wake subset of streets_wake layer to 30m raster representing speed limit:

Select 'File->Add Data->Add Data...'
Select ./ncshape.mdb/streets_wake

Select 'Conversion Tools->To Raster->PolyLine To Raster'
Set Input Features to '.\ncshape.mdb\streets_wake'
Set Value Field to 'SPEED'
Set Output Raster Dataset to 'C:\Users\myname\arcdata\assign2\rast_spdroads'
Set Cellsize to 30
Leave the remaining fields as their defaults

Adjust the working region:

Click 'Environmnents...' button (bottom of dialog)
Under 'Processing Extent' Set the 'Extent' to 'Same as layer .\ncshape.mdb\swwake_10m'
Click 'OK'
Click 'OK'
Click 'OK'

Convert point data to raster:

Select 'Conversion Tools->To Raster->Point To Raster'
Set Input Features to .\ncshape.mdb\Schools_Wake
Set Value Field to 'CORECAPACI'
Set Output Raster Dataset to sw_rast
Set Cellsize to 200
Click 'OK'

Convert Data from Raster to Vector

File->Add Data->Add Data...
Select ./ncrast.mdb/bas_50k
# if raster bas_50k is floating point, convert the values to integer (check RMC on bas_50k-->Properties)

Select 'Spatial Analyst->Map Algebra
Type in the expression  Int("bas_50k")
Set Output to bas_50kint
Click 'OK'

Select 'Conversion Tools->From Raster->Raster To Polygon'
Set Input Raster to 'bas_50kint'
Set Field to 'Value'
Set 'Output Polygon Features' to 'C:\Users\myname\arcdata\assign2\bas_50Kpoly.shp'
Click 'OK'

Export data to format readable by other software

From the Catalog Tab in ArcMap:
Navigate to and open: ncshape.mdb
RMC roadsmajor->Data->Export->To Shapefile (single)
Set Output Location to C:\Users\myname\arcdata\assign2
Set output Feature Class to 'roads_shp'
Click 'OK'

Export raster data to grid ascii:

Select 'Conversion Tools->From Raster->Raster to ASCII'
Set Input Raster to ncrast.mdb\landcl96
Set output ASCII to: 'C:\Users\myname\arcdata\assign2\landcl96.asc
Click 'OK'

Navigate to 'C:\Users\myname\arcdata\assign2\ and open landcl96.asc in NotePad
Examine the contents
Close landcl96.asc