import ComputeTools from 'kqwebmap-project/src_en/common/ComputeTools.js'

public class | source

ComputeTools

Compute tool class

Static Method Summary

Static Public Methods
public static	degreeToMeters(d: Number): Number Convert degree to meters
public static	getToMetersFromProj4(proj4: String): Number Get the rate of unit to meter.
public static	getUnitFromProj4(proj4: String): String Get map unit by proj4 string.
public static	meterToDegrees(m: Number): Number Convert meter to degrees
public static	scrollBarWidth(): Number Get scroll bar widht
public static	stdScalesToResolutions(stdScale_array: Array, to_meters: Number, dpi: Number): Array Convert standard scale to resolutions, meter / pixel

Convert degree to meters

Name	Type	Attribute	Description
d	Number		degrees

Get the rate of unit to meter. The unit number of 1 meter corresponding.

Name	Type	Attribute	Description
proj4	String		proj4 string

Get map unit by proj4 string.

Name	Type	Attribute	Description
proj4	String		proj4 string

'meter','degree','us-ft','other'

Convert meter to degrees

Name	Type	Attribute	Description
m	Number		meters

Get scroll bar widht

Convert standard scale to resolutions, meter / pixel

resolution