timeslider for vector data?

[glemoine62]

I am looking for a parallel to add_time_slider (which works with raster layers, see tutorial 22) but for time-sliced vector layers.

This could do the following:

• load a geopandas set [in my case GeoJSON]
• time slice using either an index or column holding a timestamp
• add dictionary of time sliced results with [the vector layer equivalent of] add_time_slider

(currently, add_time_slider only accepts raster layer, AFAIU)

My use case is to follow processing delays for a large set of Sentinel-1 image footprints for a (monthly) period. The footprints are annotated with the measured delays.

[giswqs]

Good suggestion. I will see if I can implement it.

[giswqs]

It is coming!

[giswqs]

This feature request has been implemented in #1047.
Notebook example: https://leafmap.org/notebooks/105_vector_time_slider/

[glemoine62]

Fantastic! I will dig into the code to understand details. This is so useful for stuff like "dashboards". Wonderful!
Thank you very much for the incredible speedy path to implementation!

Guido

[glemoine62]

Qiusheng,

I managed to adapt the code to my use case, which is somewhat specialized. It has varying geometries per timestamp and this requires me to manage not just feature fill color but also visibility. It only requires 2 simple changes in toolbar.py (line 7114 and 7215 in the revised version) replacing the style update with a fully qualified style dictionary. I replace color_code_dataframe (in common.py) by customized dictionary creation in the notebook. See attached notebook and the example geojson file to run it on (it cross-checks whether a S1 GRD image is already processed into a CARD-BS image on CDSE; I would normally read in the relevant records directly from an OData request on the catalog).

I am not sure whether you want to include this, because it is maybe a rare use case. I am just happy that I can now dig into this in more detail and adapt.

Guido

106.zip

[giswqs]

Fantastic! Thanks for sharing the notebook! I will see if I can incorporate it