Enter elevation readings

Each reading is a point on the plan with its difference from your reference point, in inches. Low spots are negative numbers, for example -0.75.

Add readings by clicking

1. Under 3. Click mode, make sure Mark elevation points is selected.
2. Click the plan where you took a reading.
3. Type the value in Elevation (inches), for example -0.75.
4. Add a Note (optional), for example "visible crack".
5. Click Save. The heatmap redraws.
6. Repeat for every reading.

Edit or delete a reading

1. Click the point's marker on the plan.
2. Change the value or note and click Save, or click Delete.
3. To drop a new point right next to it instead, click + Add new point here instead.

Every reading is also listed under 7. Elevation points. Clear all points removes them all.

Import a list of readings

If your readings are already in a list, import them under 6. Import readings.

1. Pick a Format:
   • List of values — assign by clicking points in order: one value per line. After loading, click the matching spot on the plan for each reading. Use Skip this reading or Stop assigning as needed.
   • CSV with coordinates (x%, y%, value[, note]): each line places itself.
2. Paste the list in the box, or choose a .csv or .txt file.
3. Click Load list.

Place an even grid of points

1. Draw the floor outline and set the scale first (see Outlines, walls and scale).
2. Under 5. Scale & auto-grid, set Grid spacing (ft).
3. Click Generate grid points in outline(s).
4. Click each grid point and type its reading.

Related questions

What should 0 be?

Your reference point, usually the highest spot or a spot you know hasn't moved. Green on the heatmap is at or above it.