Visualize Zarr

Step 1: Enter the URL of your Zarr store

Step 2: Define other fields to use when opening the URL with xarray

Is this URL for a reference file (i.e. kerchunk)?:

Does this Zarr store have consolidated metadata? (default should be to have consolidated metadata, learn more in the: Zarr docs).


If the URL is for a zarr hierarchy or HDF5, please specify the group to use when opening the dataset.

Step 2: Enter the variable you wish to visualize.

If you already know the variable name, type it in the input box. Otherwise, click on the "Get Variables" button to populate a drop down.

Get Variables

Step 3: Enter the rescale values.

By default, data values will be represented as they fall in the 0,255 RGB range. This won't work for most data. If data values are very small, ranging from 0 to 1 like many climate indices, you will see a big black box. Conversely, if most of your data is greater than 255, your data will appear white. It makes sense to rescale your data via the rescale parameter. If your data ranges from 0,1 that should be your rescale value.

You can enter the rescale value directly or click "Get histogram" to see a histogram of the data values.

Get histogram

Step 4: Select a colormap.

Visualize on map