Description
Return max(0,distance-radiiSum) and touchingOrOverlapping when distance<=radiiSum.
Habitat geometry describes lengths, overlaps and areas on explicit ideal shapes. An edge-to-area ratio and a root-depth overlap summarize different spatial relations; neither identifies a species-specific edge effect or functional connectivity. Supplied nonoverlap flags do not replace a geometric check.
Return max(0,distance-radiiSum) and touchingOrOverlapping when distance<=radiiSum.
When to use this tool
Use Landscape Connectivity Gap Two Patches when checking the stated ideal habitat, buffer or interval geometry.
How to use the tool and how it works
- Enter centerDistance, firstRadius, secondRadius. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read edgeGap, touchingOrOverlapping. Inspect touchingOrOverlapping before interpreting the associated values.
Require nonnegative center distance and patch radii. Return max(0,distance-radiiSum) and touchingOrOverlapping when distance<=radiiSum.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| centerDistance | Center Distance | Required. Finite number; minimum 0. |
| firstRadius | First Radius | Required. Finite number; minimum 0. |
| secondRadius | Second Radius | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| edgeGap | Edge Gap | Required. Finite number. |
| touchingOrOverlapping | Touching Or Overlapping | Required. Boolean. |
{
"input": {
"centerDistance": 10,
"firstRadius": 2,
"secondRadius": 3
},
"output": {
"edgeGap": 5,
"touchingOrOverlapping": false
}
}Limitations and assumptions
- Ideal circular geometry is not a functional connectivity, species movement or habitat-quality model.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use mapped boundaries and appropriate complete spatial/ecological models for real habitat function or field layout.
References
Similar or alternative tools
- Perennial Root Zone Depth Overlap
Return their overlap depth and divide by firstBottom-firstTop.
- Habitat Strip Edge Ratio
Return perimeter=2*(length+width) and perimeter/area=2*(1/length+1/width).