# Appending/removing data along a time dimension

**URL:** <https://forum.tiledb.com/t/appending-removing-data-along-a-time-dimension/125>\
**Category:** Uncategorized\
**Created:** [December 13, 2019, 2:53pm UTC](https://forum.tiledb.com/t/appending-removing-data-along-a-time-dimension/125 "2019-12-13T14:53:19Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![djhoese](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.tiledb.com/djhoese/32/43_2.png) [@djhoese](https://forum.tiledb.com/u/djhoese)\
**Post date:** [December 13, 2019, 6:50pm UTC](https://forum.tiledb.com/t/appending-removing-data-along-a-time-dimension/125/5 "2019-12-13T18:50:17Z")

</div>

So right now I don’t really have a working mapfile and am waiting on some guidance from the mapserver folks: [https://lists.osgeo.org/pipermail/mapserver-users/2019-December/081517.html](https://lists.osgeo.org/pipermail/mapserver-users/2019-December/081517.html)

The main issues (besides my lack of experience with mapserver and tiledb) I have are that the data I want to serve is in a non-EPSG projection and I would like to avoid resampling it. The other issue is not knowing what’s possible by pointing to a TileDB backend. I liked what I saw from TileDB and where it seems TileDB is going so wanted to try it out. The other is really not understanding if or how mapserver supports **updating** data sources in the time dimension (`wms_timeextent`).

I based what I have so far on the existing example on the tiledb docs:

```
LAYER
  NAME "goes16_fldk_true_color"
  TYPE RASTER
  DATA "/data/goes16_fldk_true_color"
  OFFSITE 0 0 0
  PROJECTION
    # "+proj=geos +sweep=x +lon_0=-75 +h=35786023 +x_0=0 +y_0=0 +ellps=GRS80 +units=m +no_defs"
    AUTO
  END
  METADATA
    "wms_title" "CSPP Geo Geo2Grid GOES-16 Full Disk True Color"
    "wms_timeextent" "2019-01-01/2021-01-01"
    #"wms_timedefault" "2019-05-01 10:11:12"
    "wms_timeitem" "TIFFTAG_DATETIME"
    "wms_enable_request" "*"
  END
  FILTER (`[TIFFTAG_DATETIME]`=`2019-02-01 01:02:03`)
END

```

If I have to make a shapefile to specify the time indexing then that’s too bad but I understand. I wonder if the TileDB GDAL driver could be updated/changed (if needed) to filter queries by dimension (like time or elevation) like PostGIS can (from what I’ve read).

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