Calculating shadow of trees with DEM in QGIS?
Hiking & ActivitiesHow to extract elevation data from dem QGIS? Method Ensure that DEM and 2d_zsh line layer files are opened, and the Point Sampling Tool plugin has been installed (Plugins >> Manage and Install Plugins >> Point Sampling Tool) Convert line vertices to points, using the preferred method described in the QGIS Convert Lines to Points
Time required to get results by solar radiation tool?
Hiking & ActivitiesHow do you calculate global solar radiation? Global Horizontal Irradiance (GHI), from the hemisphere above a horizontal plane surface, is a combination of DNI, corrected for the angle of incidence of the beam (θ), and Diffuse Horizontal Irradiance (DHI). GHI = DNI*cosθ + DHI. All these parameters are measured in units of W/m2. What is
To remove clouds of Landsat 8 surface reflectance products
Hiking & ActivitiesHow do I remove cloud from Landsat 8 images? Clean up a collection of Landsat images Open the Add Rasters to Mosaic Dataset tool again. Click the Edit button next to the Processing Template parameter to define a custom template that will mask out pixels of cloud and shadow. How do I get rid of
Changing GRASS language within QGIS?
Hiking & ActivitiesHow to change interface language in QGIS? The QGIS interface is natively programmed in English. However, at this moment over forty other languages are already available. To start QGIS with the appropriate localization, run qgis –lang in command line or change localization in QGIS under Settings ‣ Options ‣ General ‣ Locale menu. What is
Extracting part of shapefile
Hiking & ActivitiesHow do I extract part of a shapefile in Qgis? (1) On the menu bar, select Vector -> Geometry Tools -> Extract Vertices. A popup box will ask which layer you wish to extract nodes from, and how you want to save the new layer. Click OK, and a new points-only layer should appear. How
Web map survey/questionnaire
Hiking & ActivitiesWhat are the main 4 types of survey questionnaires? While there isn’t an official book of survey questions or survey taxonomy, I find it helpful to break down survey questions into four classes: open-ended, closed-ended (static), closed-ended (dynamic), and task-based. What are good questions to ask about a map? How do maps work? Why is