GIS/MEA582: Geospatial Modeling and Analysis

Data models

Launch ArcGIS Pro and login with ArcGIS Online credentials if required. Select New> Map> Create New Project. Create a new project in your preferred workspace, in the instructions below we are using the default C:\Users\myname\Documents\ArcGIS\Projects\ folder.

Use your judgement to decide which maps to include in your report. Please use the export to image method from the previous lesson rather than screen shots of the whole program.

Find the geoprocessing tools used in the assignment in theGeoprocessing pane. You can search or browse the toolboxes.

Convert Data from Raster to Raster: change resolution

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

On the Map tab, in the Layer group, click 'Add Data'
Browse to C:\Users\myname\Documents\ArcGIS\582data\ncrast.gdb
select elev_ned
select landcl96
"OK"
You can also browse to the dataset in the catalog pane and drag a feature or raster onto the map frame or contents pane.

In the Geoprocessing pane, search for and select the "resample" tool.
Set 'Input Raster' to 'landcl96'
Set 'Output raster' to 'C:\Users\username\Documents\ArcGIS\Projects\Assignment2a\Assignment2a.gdb\landcl_10m'
Set 'Output Cell Size' for x and y each to '10'
Set 'Resampling Technique' to 'NEAREST'
Click 'Run'

In the Geoprocessing pane, search for and select the "resample" tool.
Set 'Input Raster' to 'elev_ned'
Set 'Output raster' to 'C:\Users\username\Documents\ArcGIS\Projects\Assignment2a\Assignment2a.gdb\ned_10m_nn'
Set 'Output Cell Size' for x and y each to '10'
Set 'Resampling Technique' to 'NEAREST'
Click 'Run'

Check the resampled elevation surface using the aspect map:

In the Geoprocessing pane, search for and select the "aspect" tool.
Set 'Input Raster' to 'ned_10m_nn'
Set 'Output Raster' to 'C:\Users\username\Documents\ArcGIS\Projects\Assignment2a\Assignment2a.gdb\aspect_10m_nn'
Leave method as 'Planar'
Click 'Run'

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

In the Geoprocessing pane, search for and select the "resample" tool.
Set 'Input Raster' to 'elev_ned'
Set 'Output raster' to 'C:\Users\username\Documents\ArcGIS\Projects\Assignment2a\Assignment2a.gdb\ned_10m_bi'
Set 'Output Cell Size' for x and y each to '10'
Set 'Resampling Technique' to 'Bilinear'
Click 'Run'

In the Geoprocessing pane, search for and select the "resample" tool.
Set 'Input Raster' to 'elev_ned'
Set 'Output raster' to 'C:\Users\username\Documents\ArcGIS\Projects\Assignment2a\Assignment2a.gdb\ned_10m_bc'
Set 'Output Cell Size' for x and y each to '10'
Set 'Resampling Technique' to 'Cubic'
Click 'Run'

Check the interpolated elevation surface using aspect maps:

In the Geoprocessing pane, search for and select the "aspect" tool.
Set 'Input Surface' to 'ned_10m_bi'
Set 'Output raster' to 'C:\Users\username\Documents\ArcGIS\Projects\Assignment2a\Assignment2a.gdb\aspect_10m_bi'
Click 'Run'

In the Geoprocessing pane, search for and select the "aspect" tool.
Set 'Input Surface' to 'ned_10m_bc'
Set 'Output raster' to 'C:\Users\username\Documents\ArcGIS\Projects\Assignment2a\Assignment2a.gdb\aspect_10m_bc'
Click 'Run'

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

In the Geoprocessing pane, search for and select the "Aggregate" tool.
Set 'Input raster' to 'elev_ned'
Set 'Output raster' to 'C:\Users\username\Documents\ArcGIS\Projects\Assignment2a\Assignment2a.gdb\el_90m_mean'
Set 'Cell factor' to 3
Set 'Aggregation technique' to 'MEAN'
Click 'Run'

Resampling to lower resolution (downscaling) for discrete categories:

In the Geoprocessing pane, search for and select the "resample" tool.
Set 'Input raster' to 'landcl96'
Set 'Output raster' to 'C:\Users\username\Documents\ArcGIS\Projects\Assignment2a\Assignment2a.gdb\landcl_mode'
Set 'Output Cell Size' for x and y each to '90'
Set 'Resampling technique' to 'Majority'
Click 'Run'

Convert Data from Vector to Raster using a working region

Adjust the working region:

Click 'Environments' tab (top of geoprocessing pane pane)
Under 'Processing Extent' Set the processing extent to 'Same as layer' and select 'swwake_10m'
Click 'Run'

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

On the Map tab, in the Layer group, click 'Add Data'
Browse to 'C:\Users\myname\Documents\ArcGIS\582data\ncshape.gdb'
Select 'streets_wake'

In the Geoprocessing pane, search for and select the "PolyLine To Raster" tool.
Set Input Features to 'streets_wake'
Set Value Field to 'SPEED'
Set Output Raster Dataset to 'C:\Users\username\Documents\ArcGIS\Projects\Assignment2a\Assignment2a.gdb\rast_spdroads'
Set Cellsize to 30
Leave the remaining fields as their defaults
Click 'Run'

Convert Data from Raster to Vector

On the Map tab, in the Layer group, click 'Add Data'
Browse to 'C:\Users\myname\Documents\ArcGIS\582data\ncsrast.gdb'
Select 'bas_50k'
# The raster 'bas_50k' is floating point, convert the values to integer (check with RMC on 'bas_50k'-->Properties. Look at 'Pixel Type')

In the Geoprocessing pane, search for and select the "Raster Calculator" tool.
Type in the expression  Int("bas_50k")
Set Output to bas_50kint
Click 'Run'

In the Geoprocessing pane, search for and select the "Raster To Polygon" tool.
Set Input Raster to 'bas_50kint'
Set Field to 'Value'
Set 'Output Polygon Features' to 'C:\Users\username\Documents\ArcGIS\Projects\Assignment2a\Assignment2a.gdb\bas_50Kpoly
Uncheck 'Simplify Polygons' if checked.
Click 'Run'