For the past couple of months, I am working with vegetation indices (NDVI and EVI) time series data. Today, I decided to visualize some of the EVI data as an animation.
QGIS has an excellent plugin know as “TimeManager“. You can install “TimeManager” by selecting Plugins-> Manage and Install Plugins from QGIS menu. Search TimeManager in plugin window (like below)
After installation, you have to activate TimeManager plugin by clicking on it. A window (like below) will appear at the bottom of monitor screen.
Assuming that you have loaded and styled all the layers that will be used in animation, click the “setting” button on the TimeManager’s window. A new window will appear like the one below
Now add the layer, start and end time. In my case, I used “Add raster” option to add EVI layers, each layer had one second of visibility during animation. Following is an image of how my setting window looked like.
Finally, press “Export Video” button, a new window will appear like the one below.
Select the output folder and click on “Animation gif” radio button. If required, modify the “Animation frame Delay”, for my dataset, 100 millisec was too low thus I changed it to 1000 millisec.
The processing might take from few seconds to few minutes, in my case it two around 4 to 5 minutes (result below)
Some very good examples of TimeManager plugin are available on youtube, like the one below
and also this one.