Crayfish is a plugin (extension) developed by Lutra Consulting for QGIS.
The Crayfish plugin provide extra functionalities to work with mesh data in QGIS.
In addition to rendering data, users can manipulate the temporal data using its built-in grid calcultor.
With Crayfish plugin, users can export their mesh data as an animation, raster or vector and plot graphs.
You can install Crayfish plugin from the QGIS plugin repository. For loading and styling data, see QGIS documentation. Crayfish plugin provides the following functionalities:
You can create animations of the contours and vectors in the Crayfish layers. To generate an animation of contours and/or vectors, first you need to select the layer from QGIS layer tree. In QGIS, from the main menu, select Plugins, Crayfish and Export to animation.
A new window will appear:
Users have 2 options for setting up video layouts.
Users can generate plots of time series at a point or a cross section in Crayfish.
To plot cross sections or time series from an existing line or point vector layer loaded in QGIS, you need to click on From Layer and select the layer first. You can then use the select tool from the main QGIS toolbar to display plot for each feature.
You can change various settings of the plot by right-clicking on the plot area. Crayfish plot also supports export to the following formats: image (png, jpg, etc.), scalable vector graphics and CSV.
Under the Projecessing toolbox, you should be able to access several algorithms to export your mesh data to raster or vector. You can also use the Mesh calcultor as a processing toolbox.