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Online Graph Shading

Build one or more shaded regions between compatible graphs or on one side of a function, line or coordinate axis, with precise intervals and fill patterns.

Online Graph Shading Functions · Parametric · Polar · Relations · Analysis
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Detailed instructions

Use this workspace from input to export

A dedicated page opens the correct tab. Save and Open preserve the editable Functions, Table, Shading, Revolution and Axes scopes together with their objects and images.

Quick guide

  1. Create the boundary functions in Functions first; use two y = f(x) graphs for x-bounds or two x = f(y) graphs for y-bounds.
  2. Choose Shade between two graphs or Shade one side, then select the boundaries and the required direction.
  3. Set xmin–xmax or ymin–ymax, fill color, opacity and solid/stripe/grid pattern; add, update or delete regions as needed.
  4. Adjust the underlying graphs and axes, add annotations, then Save the project or export PNG, SVG or Copy.

Shade between two graphs

  • For an x-bound, select two y = f(x) functions and set the horizontal interval.
  • For a y-bound, select two x = f(y) functions and set the vertical interval.
  • Choose a solid fill, diagonal stripes, crosshatch, horizontal/vertical stripes or a grid pattern.
  • Add multiple regions to one project and reopen a listed region to update its settings.

Shade one side of a boundary

  • Shade above or below a graph y = f(x).
  • Shade to the left or right of a vertical line x = c.
  • Shade above/below the x-axis or left/right of the y-axis.
  • Use the interval fields to limit how far the one-sided fill extends.

Manage a complete shaded drawing

  • The boundary graphs remain editable in Functions, so changing a formula updates the drawing context.
  • Use Add new region to keep the current region and create another; use the region list to edit or delete one item.
  • Clear all shading removes only the relevant shaded regions and leaves the functions available.
  • Axes, text/formula objects, local images, Undo/Redo and project files work with the shaded result.

Edit, save and export

  • Use A to insert editable plain text or an Alpha Formula. Insert images from the device, and add Line or Arrow objects where those buttons are available.
  • Select and drag objects directly. Double-click an object to edit it; image handles resize or rotate it, and Front/Back controls set its layer.
  • Undo and Redo include drawing changes, object edits, table edits, inserted images and axis customizations.
  • Save downloads a portable .ogp project containing Functions, Table, Shading, Revolution, Axes and their editable objects. HTML creates a launcher that restores the same saved scopes in a real OnlineGraphing.com tab.
  • Open loads a saved .ogp project. PNG and Copy create raster output, while SVG remains vector-based and stays sharp when enlarged.

The two graphs used for between-graph shading must be compatible types: y = f(x) with y = f(x), or x = f(y) with x = f(y).

Tip: save an .ogp project before making major changes so supported editable content can be restored later. The project file does not include Analysis results or entries from the Points tab.

Need every control explained?
Open the complete user guide