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I will do terrain analysis and dem mapping with qgis and gee
Rifas R
About this gig
I WILL PERFORM PROFESSIONAL TERRAIN ANALYSIS AND 3D MAPPING USING QGIS
Unlock the power of your landscape with expert terrain analysis and GIS mapping services. I specialize in transforming elevation data into actionable insights using QGIS and Google Earth Engine for engineering, environmental, and planning projects.
I WORK WITH THESE DATA TYPES:
- Digital Elevation Models (DEM) - SRTM, ASTER, ALOS PALSAR
- LiDAR data and point cloud datasets
- Drone survey and photogrammetry data
- Contour lines from topographic maps
- Bathymetry data for underwater terrain
- Satellite imagery (Landsat, Sentinel-2)
MY TERRAIN ANALYSIS SERVICES:
- Slope and aspect analysis for stability assessment
- Hillshade and relief visualization for 3D effects
- Hydrological modeling (watershed delineation, flow accumulation)
- Contour generation with customizable intervals
- Viewshed and line-of-sight analysis
- Cut/fill volume calculations for construction
- Watershed and drainage basin mapping
YOU WILL RECEIVE:
- Publication-ready topographic maps and figures
- Multiple formats (PDF, PNG, GeoTIFF, KMZ)
- Raw processed data for your further use
- Clear communication and revision cycles
Message me before placing order to discuss your project
Get to know Rifas R
Rifas R
GIS and Remote Sensing Specialist
- FromSri Lanka
- Member sinceOct 2025
- Last delivery5 months
Languages
Tamil, English, Sinhala
As a Geospatial Data Analyst with a 7-year background in Survey Engineering, I offer end-to-end GIS expertise. Using QGIS and Google Earth Engine, I deliver precise georeferencing, flawless digitizing, insightful thematic mapping, and detailed terrain analysis. I am dedicated to transforming raw spatial data into accurate, professional-grade outputs that support your project's critical objectives.
FAQ
What elevation data do you use, and can I provide my own?
I typically use high-resolution global DEMs like AW3D30, SRTM, or Copernicus. For higher accuracy, I strongly recommend and can work with LiDAR or local survey data if you have it. Please message me about your project's precision requirements.
What specific deliverables will I receive?
You will receive high-resolution map images (PDF/PNG) and the processed raster data (GeoTIFF) for your future use. Higher packages include analysis reports and presentation slides. All files are delivered in ready-to-use formats.
Can you perform a watershed analysis for my specific location?
Yes, watershed delineation is a core service. I need your area of interest and the desired pour point location. I can help determine this if you're unsure. This is included in the Standard and Premium packages.
What's the difference between slope, aspect, and hillshade analysis?
Slope: Shows steepness (crucial for construction) Aspect: Indicates direction terrain faces (for solar/wind analysis) Hillshade: Provides 3D visualization of topography I'll recommend the right analysis based on your project goals.
Do you provide the source code or methodology for the analysis?
While I don't typically provide proprietary scripts, I deliver a complete methodology description and all output data. This ensures you can understand, replicate, and apply the results in your work effectively.
