Class: QgsMapUnitScale¶
Struct for storing maximum and minimum scales for measurements in map units
For measurements in map units, a minimum and a maximum scale can be defined. Outside this range, the measurements aren’t scaled anymore proportionally to the map scale.
Methods
Computes a map units per pixel scaling factor, respecting the minimum and maximum scales set for the object. |
Attributes
The maximum scale, or 0.0 if unset. |
|
The maximum size in millimeters, or 0.0 if unset |
|
Whether the maximum size in mm should be respected |
|
The minimum scale, or 0.0 if unset. |
|
The minimum size in millimeters, or 0.0 if unset |
|
Whether the minimum size in mm should be respected |
- class qgis.core.QgsMapUnitScale[source]¶
Bases:
object- __init__(minScale: float = 0, maxScale: float = 0)
Constructor for QgsMapUnitScale
- Parameters:
minScale (float = 0) – minimum allowed scale, or 0.0 if no minimum scale set
maxScale (float = 0) – maximum allowed scale, or 0.0 if no maximum scale set The scale values indicates the scale denominator, e.g. 1000.0 for a 1:1000 map.
- __init__(a0: QgsMapUnitScale)
- Parameters:
a0 (QgsMapUnitScale)
- computeMapUnitsPerPixel(self, c: QgsRenderContext) float[source]¶
Computes a map units per pixel scaling factor, respecting the minimum and maximum scales set for the object.
- Parameters:
c (QgsRenderContext) – render context
- Return type:
float
- Returns:
map units per pixel, limited between minimum and maximum scales
- maxScale¶
The maximum scale, or 0.0 if unset. The scale value indicates the scale denominator, e.g. 1000.0 for a 1:1000 map.
- maxSizeMM¶
The maximum size in millimeters, or 0.0 if unset
- maxSizeMMEnabled¶
Whether the maximum size in mm should be respected
- minScale¶
The minimum scale, or 0.0 if unset. The scale value indicates the scale denominator, e.g. 1000.0 for a 1:1000 map.
- minSizeMM¶
The minimum size in millimeters, or 0.0 if unset
- minSizeMMEnabled¶
Whether the minimum size in mm should be respected