Roman Toasov Roman Toasov - 2 years ago 124
Javascript Question

Google Street View JS APIv3 retry request if street data found ZERO_RESULTS

When I get panorama for marker within 50 meter max radius then sometimes it finds no panorama but if I'd set about 60+ meter radius then it would have worked.

So I'd like to auto make another request for street data with +10 meters radius and if nothing was found up to 100 meters total then stop completely.

I know how to loop it in procedural JS with for or while whatever, but I don't know OOP JS so I am not sure where/how to fire request again based on function response.

Basically code looks like

marker1.addListener('click', function(event) {, marker1);
sv.getPanorama({location: event.latLng, radius: 50}, processSVData);



function processSVData(data, status) {
if (status === google.maps.StreetViewStatus.OK) {
heading: 270,
pitch: 0

} else if (status === google.maps.StreetViewStatus.ZERO_RESULTS) {
alert(status + " need to retry with radius +10 merters but how?");
} else {
alert(status + " cant do nothing about it bye");

Here's full example marker B has street view data at 50 meters when marker A does not.

Answer Source

Assuming that there is no conflict elsewhere in the program with the panorama queries calling too quickly (going over query limit), then a possible solution would be to use a function with a timeout to handle the query.

function getPanorama(args){
    sv.getPanorama(args, function(data, status){processSVData(data, status, args); 
    //need to pass args to callback to properly increment
  }, query_limit_delay);

and in processSVData:

function processSVData(data, status, args){
  } else if (status === google.maps.StreetViewStatus.ZERO_RESULTS) {
    if(args.radius < 100){
      args.radius += 10; //increase radius by 10 meters

Basically, this 1) calls the getPanorama function. Once the delay (to not go over the query limit) has passed, it sends the returned data to the callback. If there are ZERO_RESULTS, the radius from the previous query is increased by 10, and the process repeats. However, if the data shows up, the data is handled and the loop exits.

One initiates a query by calling something like:

marker1.addListener('click', function(event) {, marker1);
  getPanorama({location: event.latLng, radius: 50});

Good luck on your application!

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