AmMap - keeping the same zoom level and position after updating map data

Question

I am updating the map areas of an AmMap map, but the zoom level and position is reset whenever I do.

My function which is updating the map is:

function setData(data) {
    var parsedData = JSON.parse(data);

    map.dataProvider.areas = parsedData.areas;
    map.validateData();
}

I have tried a bunch of things, but I can't get this to work.

Cheers for any help.

score 4 · Answer 1 · answered Nov 02 '14 at 17:51

4

before you update your data, get the current zoom values and pass them into the dataprovider. Take a look to following sample http://www.amcharts.com/tips/retaining-map-zoom-level-position-data-update/

answered Nov 02 '14 at 17:51

Maertz

4,952
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the zoomLevel method doesn't seem to be working, I get a "Cannot read property 'scale' of undefined" error. Any ideas? – j_d Oct 01 '15 at 14:23

score 1 · Answer 2 · edited May 23 '17 at 12:10

1

In addition to Maertz answer, remember to set zoomLatitude and zoomLongitude to zero so you won't get the "Cannot read property 'scale' of undefined" error.

edited May 23 '17 at 12:10

Community

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1

answered May 07 '17 at 23:26

Hans Gansowen

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4

score 0 · Answer 3 · edited Nov 30 '16 at 04:14

0

Try to add var map = event.chart; at the method start.

edited Nov 30 '16 at 04:14

answered Nov 30 '16 at 04:12

Andrey Mikhalev

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1

AmMap - keeping the same zoom level and position after updating map data

3 Answers3