Description
Require a numeric position of length two or three, longitude in [-180, 180], and latitude in [-90, 90]; return whether a third ordinate is present inside result.
A GeoJSON position is an ordered coordinate tuple. Its dimension and individual ordinates are structural information; the presence of a third value alone does not establish a usable altitude or a valid coordinate reference.
Require a numeric position of length two or three, longitude in [-180, 180], and latitude in [-90, 90]; return whether a third ordinate is present inside result.
When to use this tool
Use GeoJSON: Geometry Coordinate Z Presence Check when you need a coordinate-tuple shape check or explicit ordinate operation.
How to use the tool and how it works
- Enter position. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read result. Expand result to inspect the returned fields.
Require a numeric position of length two or three, longitude in [-180, 180], and latitude in [-90, 90]; return whether a third ordinate is present inside result.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| position | Position | Required. Array of finite number. Implementation limit: 128 items. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| result | Object containing the calculated members; expand to inspect the fields below. | Required. Object. |
| result.hasZ | Has Z | Calculated result member: boolean. |
{
"input": {
"position": [
1,
2,
3
]
},
"output": {
"result": {
"hasZ": true
}
}
}Limitations and assumptions
- The third value is treated as Z by position alone. Its vertical datum, meaning, and suitability are not verified, and no coordinate transformation is performed.
- Outputs are nested inside result. 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
Validate the complete coordinate convention and geometry before geospatial use. For actual coordinate conversion, use a transformation with the source and target reference systems explicitly specified.
References
Similar or alternative tools
- Point Third Ordinate Presence Token
Return hasThird by length, the third value when present or zero placeholder, and count entries beyond three.
- Position Dimension Count
Return its length, presence of a third entry, and the count beyond three.