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Uploading a CSV file

You can upload a CSV file using the upload button above the table, or by dragging and dropping a CSV file onto the table. See “Uploading data” in the documentation on how to correctly format your file.

Pasting data

You can paste values directly into multiple data cells at once from Excel or Google Sheets. You can also copy plain text as long as the values are separated by tabs.

1. First, select and copy multiple cells in Excel/Google sheets.
2. In the table, select the first cell you want to copy in to. Make sure the cell is only selected and not being edited.

   

   

3. Paste when the cell is selected and not in edit mode, multiple cells will be set at once.

Note that the cell values are validated on paste. A warning will be displayed for each invalid value.

There are two ways to connect points with lines:

1. Click the Insert menu above the plot and select Draw Line. Now click the points you want to connect in the order you want them to be connected. Press and hold on the last point to finish the line.
2. In the table, select and copy the points that form the line from the points table to the lines table. Reorder them if needed.

You can style the lines by changing their color, width, and dash pattern in the Lines table. See the Lines documentation for more details.

Callouts are arrow annotations that point to specific locations on your plot. To add a callout:

1. Click the Insert menu above the plot
2. Select Draw Callout
3. Click on the plot where you want the arrow to point
4. Click again to position the label text

You can edit the callout text by double-clicking it, move it by dragging, and delete it using the trash icon that appears on hover.

Tip: To place callouts outside the plot boundaries, disable clipping in the Background section of the configuration menu.

Areas create filled regions on your ternary plot. You can add them in two ways:

1. Click the Insert menu and select Draw Area. Click points on the plot to define the boundary, then press and hold on the last point to close the area.
2. Manually enter coordinates in the Areas table. Each row needs at least three sets of A, B, C coordinates to form a closed region.

You can customize the fill color, opacity, stroke, and other styling properties in the Areas table.

Scales allow you to map data values to visual properties like size, color, or symbol shape:

1. Add your data values to the "value" column in the points table. These can be numbers (e.g., temperature measurements, years) or text categories (e.g., "Group A", "Type 1").
2. Click the "Scales" button in the points table toolbar.
3. The dialog will automatically detect whether your values are numeric or categorical and show you statistics about your data.
4. Choose an output property:
   • Size - Make points larger/smaller based on numeric values
   • Color - Color points using gradients (numeric) or discrete colors (categorical)
   • Symbol - Use different shapes for different categories
5. Configure the scale (type, color scheme, size range) and click "Apply Scale".

The scale will update all the corresponding cells in your points table. You can undo this with Ctrl/Cmd+Z if needed.

The scales feature automatically detects your data type and shows different options:

Numeric scales

Used when all values in the "value" column are numbers. You can:

• Map to size using linear, logarithmic, square root, or power scales
• Map to color using sequential gradients (like viridis, plasma) or diverging schemes (for data with a meaningful center point)

Categorical scales

Used when values contain text or mixed text/numbers. You can:

• Map to color using categorical color schemes that assign distinct colors to each unique value
• Map to symbol to use different shapes for each category (circle, square, triangle, etc.)

The detection info panel at the top of the scales dialog shows what was detected and sample values, so you can verify it understood your data correctly.

Zoom insets create a magnified view of a specific region, perfect for showing detail when you have many overlapping points:

1. Click the Overlays button in the toolbar
2. Select Zoom Inset... from the menu
3. Enter edit mode to configure the inset region and position
4. Drag the handles to adjust the magnified area
5. Click Done when finished

The zoom inset shows a magnified portion of your plot while keeping the full plot visible for context. This is especially useful for overplotting scenarios.

In case the plot doesn’t show what you are expecting, check the following:

1. Check if the element has ternary values i.e. the values are not (0, 0, 0).
2. Check if all the plot elements are toggled in the toolbar above the plot. Blue means enabled, gray means disabled.
3. Check if the fill and/or stroke color of the elements is the not same as the background color.
4. Check if the opacity of the elements is not 0.
5. Check if your color format has a opacity (alpha) channel that is set to 0%, for example hsla(77 100% 50% / 0)

In case of overplotting, here's what you can do.

• Change the domains to focus on a specific region.
• Use a zoom inset to show a magnified view of the crowded region while keeping the full plot visible.
• Decrease the size of the points by setting smaller radii in the size column.
• Decrease the opacity of the points.
• Make only the most interesting points larger and make the rest of the points much smaller or more transparent.
• Add the most interesting points last in the table. The points are plotted in order, meaning later points are plotted on top of previous points.

You can change the domains in two ways to focus on specific regions of the plot:

1. Using the “Domains” section in the configuration menu (gear icon):
   1. Click the “View domains” button to see the current domain area
   2. Use the “Domain length” slider to zoom in/out (values less than 1 zoom in)
   3. Click and drag the shaded triangle to position it over your area of interest
   4. Use number inputs to precisely set domain boundaries for each axis if needed
   5. Click “Confirm domains” when satisfied
2. Using the quick controls above the plot:
   1. Click the “View domains” button
   2. Use the slider to change the domain length
   3. Click and drag the shaded triangle to position it
   4. Click “Confirm domains” when satisfied

The domain values snap to the nearest 1% for precision. The shaded area shows the current visible region of the plot.

See the Custom Partial Domains documentation for more details on focusing on specific regions.

You can reverse the domains using the “Reverse domains” toggle in the Domains section of the configuration menu (gear icon). This will flip the direction of all axes and automatically adjust the label and tick angles accordingly.

Because clipping is enabled in the background section of the plot config. To fix this, open the configuration menu (gear icon) and navigate to the Background section. Disable the clipping option to allow callouts to extend beyond the plot boundaries.