Modify a DTM / using docofossor (long version)

How to modify a Digital Terrain Model (DTM) using Grasshopper and the docofossor plug-in – importing a grid.asc file into grasshopper / using relative and absolute operations / exporting a raster/gird as .asc file from grasshopper

speaker: marc ihle | length: 56 min

link to pdf – documentation docofossor

Modify a DTM / using docofossor (short version)

How to modify a digital terrain model (DTM) using Grasshopper and the docofossor plug-in – importing a grid.asc file into grasshopper / using relative and absolute operations / exporting a raster/gird as .asc file from grasshopper

speaker: marc ihle | length: 14 min

download gh-file

Resample a Grid

How to resample a raster/gird in SagaGIS | for example: making a 1m grid out of a 0.25m grid

speaker: marc ihle | length: 2 min

TIF to ASC format

How to export an.ASC-file using Saga GIS and QGIS

speaker: marc ihle | length: 5 min

Modify a DTM / using the image sampler [v2]

How to use the image sampler component in Grasshopper to create and modify a DTM (Digital Terrain Model) | this is an extension to the image sampler tutorial in Session 03/04

speaker: marc ihle | length: 13 min

download gh-file

Water flow simulation

How to run a basic water flow simulation in Grasshopper using the anemone plug-in

speaker: marc ihle | length: 23 min

download gh-file

Image Sampler [v1]

How to use the Image Sampler Component to sample raster values – using RGB and BW images to sample elevational values or other terrain attributes in Grasshopper

speaker: marc ihle | length: 42 min

download gh-file

Read a text file

Using grasshopper to read a comma-separated list of values | using grasshopper to visualize point observations/attributes

speaker: marc ihle | length: 33 min

download gh-file

Write a text file

How to export a text file from Grasshopper using stream contents exporting XYZ coordinates and other attributes from Grasshopper to a comma-separated text file

speaker: marc ihle | length: 33 min

download gh-file

01 – LiDaR – point cloud processing

How to use SagaGIS for basic LiDaR data processing importing LiDAR data downloaded from hoydedata.no as .laz files to SagaGIS / Using SagaGIS for basic processing of point clouds / merge & clip / using SagaGIS to add grid values of a raster image (orthoimage – RGB) as additional attributes of the point cloud / Exporting data as a .txt file / importing data to Excel / Workshop held by Volker Wichmann at the UiT / summary recording, marc ihle

speaker: marc ihle | length: 16 min

02 – LiDaR – point cloud processing

How to process point clouds in SagaGIS to a DSM / DTM / nDSM – .using SagaGIS to extract a subset of classified points of a point cloud / using point clouds to grid/using spline interpolation to fill missing grid values of the DTM – using a multi-directional filter for smoothing pre-processed results of the DTM / using close gaps to fill grid values in the DSM / Using difference grid to calculate a nDSM / Workshop held by Volker Wichmann at the UiT / summary recording, marc ihle

speaker: marc ihle | length: 30 min

01 – Hoydedata.no / online resources

How to download elevational data from hoydedata.no looking at available data sets on hoydedata.no – LAZ-files – DTM+DOM / viewing LAZ files online / speaker: marc ihle

speaker: marc ihle | length: 14 min

02 – merge & cut raster data / QGIS

How to use Qgis to reference / merge & cut raster data – merging and clipping elevational raster DTM/DOM downloaded from hoydedata.no / creating new shp-layers -> a point of interest / an area of interest / speaker: marc ihle

speaker: marc ihle | length: 20 min

03 – Basic Terrain Analysis in Saga GIS

How to use SagaGIS to run a basic terrain analysis – Using SagaGIS to calculate different terrain attributes of the DTM / exporting values as .txt-file or as a gird-file(geoTIFF) from SagaGIS / importing txt files in QGIS / visualizing attributes in QGIS / speaker: marc ihle

speaker: marc ihle | length: 34 min

01 – Create a Section through raster data

How to use QGIS and the profile section tool to extract attributes along a section line importing raster data to QQIS / drawing a section line as shp-layer in QGIS. Use the profile-tool-plug-in in QGIS to sample raster data values along that section line / how to export values as a list to create a database of attributes in Excel.

speaker: marc ihle | length: 17 min

02 – Excel as IO between GIS & Grasshopper

How to read an EXCEL file with attributes in Rhino/Grasshopper import data from Excel to Grasshopper and draw/visualize data in Rhino/Grasshopper

speaker: marc ihle | length: 33 min

03 – Visualize data in Grasshopper

How to use Grasshopper to visualize data draw/visualize data from an excel document in Rhino/Grasshopper

speaker: marc ihle | length: 29 min