The Add Table block allows you to produce tabulated numeric values. These are displayed in the DASHBOARD tab. 

How to use the Add Table block

TABLE OF CONTENTS

• Step 1: Snap the Add Table block into place
• Step 2: Select your variables
• Step 3: Check your preview, SAVE and RUN WORKFLOW
• An Example Table

The Add Table block is in the Toolbox under OUTPUT->DASHBOARD.

This block allows you to generate your own tabular output of numeric values derived from the datasets your worfklows have generated.  Note that since the Add Table block brings in data from across your workflows, you can also use it as a standalone block:

This is sometimes more suitable as it allows you to keep the table separate from any particular workflow. 

To use the Add Table block, follow these steps:

Step 1: Snap the Add Table block into place

• The Add Table block should be placed after the Collate Images in Time block. 
• Here is an example workflow with a table block in place:

Step 2: Select your variables

• Click on the settings icon (the cog) to open the Table Creator box. 
• The following window will appear:

• We start by choosing what values we want within the cells of the table. 
• Click on +ADD VALUE to start selecting the data values.  It will give you the following option:

• "Statistic from dataset" means the cells will contain some aggregation of the data values within an image layer.
• "Coverage calculation" is for determining the area covered by your areas of interest or classes within a classification (either one you have conducted yourself or from a landcover dataset).

If you choose Statistic from Dataset:

• First, define the values that will go in the cells of the table:
  • It will give you a drop-down menu to choose the Dataset first.  
  • Once you have chosen a dataset it will ask you to choose the numeric band and then the statistical calculation to aggregate the band data.
  • Finally, it will ask you to choose which dates you wish to include in the table. 
  • Clicking +Add Value will allow you to include other statistics within the table.
• Second, choose the groupings that will form the rows of the table:
  • If you have several areas of interest, you can select these are rows. 
  • Similarly, if you have a collection of areas, you can choose the collection.
  • The preview will give you an indication of how the table will look.
• The dustbin icon will delete the row.

If you choose Coverage Calculation:

• First, define what area calculation you want: the actual area in hectares, or the % of a total area (which is for tabulating classes).
• Then define the data from the groupings selection.
• For example, to tabulate the area (in hectares) of land classes, it would look something like this:

• The preview will give you an indication of how the table will look.
• The dustbin icon will delete the row.

Step 3: Check your preview, SAVE and RUN WORKFLOW

• Within the Table Creator a preview is shown at the bottom so that you can see what the table will look like.  Note that the values are dummy values -- they are just there to illustrate the table layout.
• Click SAVE. 
• When you run your workflow the table will be created and displayed in the DASHBOARD tab.
• Click on the download icon to download the table data as a CSV file to reuse elsewhere. 

An Example Table

• Here is an example workflow with a table that shows the time series of NDVI for five areas of interest.
• Build a workflow with Sentinel 2 and include a calculation of NDVI using the Index block. 
• Create a number of Areas of Interest on the map. 
• Include an Add Table block as shown below. 

• Choose the following parameters in the Table Creator. 

• The table output will show each area on a separate row, with the time series of NDVI in consecutive columns, as follows. Note that the chart was also selected. 

Tip: The graph output is dynamic -- click on the title of each line to remove it from the graph.

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