below formula converts 4326 latitude to 102100 latitude
+ (double)toWebMercatorY:(double)latitude
{
double rad = latitude * 0.0174532;
double fsin = sin(rad);
double y = 6378137 / 2.0 * log((1.0 + fsin) / (1.0 - fsin));
return y;
}
below formula converts 4326 longitude to 102100 longitude
+ (double)toWebMercatorX:(double)longitude
{
double x = longitude * 0.017453292519943 * 6378137;
return x;
}
See my attachment , it contains a utility mercator convertor . You can simply import the class in your project and call the above static methods on it
I have tried it with location manager and it works!!!
Regards,
Harikant Jammi
Hi Jammi.I'm a beginner of objective-C. How can use your fantastic code in my code:
- (void)locator:(AGSLocator *)locator operation:(NSOperation *)op didFindLocationsForAddress:(NSArray *)candidates{
//check and see if we didn't get any results
if (candidates == nil || [candidates count] == 0){
//show alert if we didn't get results
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Informazione" message:@"Nessun risultato trovato" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
[alert show];
[alert release];
}
else {
//use these to calculate extent of results
double xmin = DBL_MAX;
double ymin = DBL_MAX;
double xmax = -DBL_MAX;
double ymax = -DBL_MAX;
//create the callout template, used when the user displays the callout
self.calloutTemplate = [[[AGSCalloutTemplate alloc]init] autorelease];
//loop through all candidates/results and add to graphics layer
for (int i=0; i<[candidates count]; i++){
AGSAddressCandidate *addressCandidate = (AGSAddressCandidate *)[candidates objectAtIndex:i];
//get the location from the candidate
AGSPoint *pt = addressCandidate.location;
//accumulate the min/max
if (pt.x < xmin)
xmin = pt.x;
if (pt.x > xmax)
xmax = pt.x;
if (pt.y < ymin)
ymin = pt.y;
if (pt.y > ymax)
ymax = pt.y;
//create a marker symbol to use in our graphic
AGSPictureMarkerSymbol *marker = [AGSPictureMarkerSymbol pictureMarkerSymbolWithImageNamed:@"BluePushpin.png"];
marker.xoffset = 9;
marker.yoffset = -16;
marker.hotspot = CGPointMake(-9, -11);
//set the text and detail text based on 'Name' and 'Descr' fields in the attributes
self.calloutTemplate.titleTemplate = self.searchBar.text;
//create the graphic
AGSGraphic *graphic = [[AGSGraphic alloc] initWithGeometry: pt symbol:marker attributes:[[addressCandidate.attributes mutableCopy] autorelease] infoTemplateDelegate:self.calloutTemplate];
//add the graphic to the graphics layer
[self.graphicsLayer addGraphic:graphic];
if ([candidates count] == 1)
{
//we have one result, center at that point
[self.mapView5 centerAtPoint:pt animated:NO];
// set the width of the callout
self.mapView5.callout.width = 250;
//show the callout
[self.mapView5 showCalloutAtPoint:(AGSPoint *)graphic.geometry forGraphic:graphic animated:YES];
}
//release the graphic bb
[graphic release];
}
//if we have more than one result, zoom to the extent of all results
int nCount = [candidates count];
if (nCount > 1)
{
AGSMutableEnvelope *extent = [AGSMutableEnvelope envelopeWithXmin:xmin ymin:ymin xmax:xmax ymax:ymax spatialReference:self.mapView5.spatialReference];
[extent expandByFactor:1.5];
[self.mapView5 zoomToEnvelope:extent animated:YES];
}
}
//since we've added graphics, make sure to redraw
[self.graphicsLayer dataChanged];
}Thanks
