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Terrain analysis

Editing Data. Efficiency of the Line Intersection Algorithm. More on Algorithm Efficiency. Raster Data Structures.

Lab 7

Assignment Instructions

⚠️ Work Environment

On university computers, work inside the folder:
C:\Users\Public\ or C:\Users\Public\Documents
(This is recommended even on personal computers, as the program may encounter issues when files are located elsewhere.)

📦 Required Software

  • ArcGIS – Required ✅
  • Google Earth – Optional (depending on the task) ✅

Warning

Do not delete completed work until the end of the semester.

Danger

File Naming Rules

❌ Incorrect:

Giorgi Kapanadze.Group/1$ work1

❌ Do not use:

  • Georgian characters (ა, ბ, გ, დ, etc.)
  • Special symbols (other than an underscore _)

✅ Correct:

Giorgi_Kapanadze_Group_4_work_1

Tip

Use only Latin letters, numbers, and underscores (_) for:
Archive names, folder and file names, and table column names.

📘 Step-by-Step Guide

Note

You must be authorized (logged in) on elearning.gtu.ge to download the data.

  • We are using a DEM&TIN task as part of this exercise.
  • Rename main folder from DEM_TIN to Terrain_analysis. Example "Giorgi_Kapanadze_Group_4_work_6_terrain_analysis"
  • Add inside project additional necessary folders:
  • Inside Raster folder add subfolder Terrain

graph LR
  A[FirstName_LastName_GroupNumber_Assignment_Number] --> B{Archive};
  A[FirstName_LastName_GroupNumber_Assignment_Number] --> C{Project};
  A[FirstName_LastName_GroupNumber_Assignment_Number] --> D{lyr};
  A[FirstName_LastName_GroupNumber_Assignment_Number] --> E{shp};
  A[FirstName_LastName_GroupNumber_Assignment_Number] --> F{Geodatabase};
  A[FirstName_LastName_GroupNumber_Assignment_Number] --> G{Style};
  A[FirstName_LastName_GroupNumber_Assignment_Number] --> H{Topology_rules};
  A[FirstName_LastName_GroupNumber_Assignment_Number] --> I{Raster};
  I --> J{DEM};
  I -->|For slope, Aspect, Hillshade| K[Terrain];
Connect ArcGIS (from ArcCatalog) to this main folder.

  • Save them in Raster folder inside "terrain"
  • Create hillshade in .tif format from the clipped raster data with default parameters and another one with azimuth angle of the light source 200 & Altitude angle of the light source above the horizon 30 degrees.
  • Create slope in .tif format from the clipped raster data.
  • Create aspect in .tif format from the clipped raster data.
  • Store the DEM raster data in a geodatabase by importing it from the workspace.
  • Change the data source from .tif to geodatabase grid format. --- List the data sources.
  • Properly saving the project file of ArcMap. Name it "Terrain_analysis". Save another mxd file for old versions "Terrain_analysis_10.0v".
  • Compress (zip) your folder (named after your first and last name). 💾
  • Use formats like .rar or .zip.

  • Name the archive as:
    FirstName_LastName_GroupNumber_Assignment_Number

  • Send it to: giorgi.kapanadze@gtu.ge

Warning

If you experience any issues with the submission process, contact:
giorgi.kapanadze@gtu.ge
Or use any file transfer services.

Info

📌 If anything is unclear, feel free to ask! 😊
If something here was done incorrectly, I’ll correct it — or you can create a pull request.