4 Answers, 1 is accepted
0
Ioan
Top achievements
Rank 1
answered on 05 Nov 2014, 07:47 AM
It seems RadMap doesn't support yandex projection projection.wgs84Mercator (EPSG:4326 ellipsoid). Can you please provide a starting point for creating my own projection?
0
Hello Loan,
You can create custom map provider and override its SpatialRefence property which returns the projection.
We hope you can also find useful the following threads:
Custom Map Projection
Offline map Servier ( Andrey's post from 26. October 2011 )
Regards,
Petar Mladenov
Telerik
You can create custom map provider and override its SpatialRefence property which returns the projection.
public
class
MyMapProvider : TiledProvider
{
/// <summary>
/// Initializes a new instance of the MyMapProvider class.
/// </summary>
public
MyMapProvider()
:
base
()
{
MyMapSource source =
new
MyMapSource();
this
.MapSources.Add(source.UniqueId, source);
}
/// <summary>
/// Returns the SpatialReference for the map provider.
/// </summary>
public
override
ISpatialReference SpatialReference
{
get
{
return
new
MercatorProjection();
}
We hope you can also find useful the following threads:
Custom Map Projection
Offline map Servier ( Andrey's post from 26. October 2011 )
Regards,
Petar Mladenov
Telerik
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0
Massimo
Top achievements
Rank 1
answered on 26 Feb 2017, 02:17 PM
Hi loan, have you succeeded?
Can telerik provide a little help to implement GeographicToLogical and LogicalToGeographic functions please?
0
Hi Massimo,
Have you tried implementing custom projection by inheriting from our SpatialReference class. Basically it implements the mentioned GographicToLocigal and LogicalToGeographic functions:
Regards,
Petar Mladenov
Telerik by Progress
Have you tried implementing custom projection by inheriting from our SpatialReference class. Basically it implements the mentioned GographicToLocigal and LogicalToGeographic functions:
/// <summary>
/// The OGC Spatial Reference requirements.
/// </summary>
public
class
SpatialReference : ISpatialReference
....
/// <summary>
/// Converts a geographical coordinate (Longitude, Latitude) to a logical Point (0->1).
/// </summary>
/// <param name="geographicPoint">The geographical coordinate (Longitude, Latitude).</param>
/// <returns>The logical Point.</returns>
public
virtual
Point GeographicToLogical(Location geographicPoint)
{
double
d = Math.Sin(geographicPoint.Latitude *
this
.AngularUnitOfMeasurement);
Point point =
new
Point((geographicPoint.Longitude *
this
.AngularUnitOfMeasurement *
this
.ScaleX) +
this
.OffsetX,
(0.5 * Math.Log((1.0 + d) / (1.0 - d)) *
this
.ScaleY) +
this
.OffsetY);
if
(point.Y > 1)
{
point.Y = 1;
}
return
point;
}
/// <summary>
/// Converts a logical Point (0->1) to a geographical coordinate (Longitude, Latitude).
/// </summary>
/// <param name="logicalPoint">The logical Point.</param>
/// <returns>The geographical coordinate (Longitude, Latitude).</returns>
public
virtual
Location LogicalToGeographic(Point logicalPoint)
{
return
new
Location(
Math.Atan(Math.Sinh((logicalPoint.Y -
this
.OffsetY) /
this
.ScaleY)) * RadiansToDegrees,
(logicalPoint.X -
this
.OffsetX) * RadiansToDegrees /
this
.ScaleX);
}
Regards,
Petar Mladenov
Telerik by Progress
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