How do I refresh a TMS layer in OpenLayers?

Question

I have a TMS layer that looks something like this:

var v = 1;
my_tms = new OpenLayers.Layer.TMS(
    "My TMS",
    "my_mapserver.php?v="+my_var+"&",
     { transparent: 'true', type:'png', getURL:get_my_url }
);

Where my_mapserver.php returns map tiles according to the value of v.

The app allows users to change v, and I simply want to refresh the my_tms layer, however, so far the only way I can get it to refresh is by destroying the map and recreating it.

I thought I could just do something like this:

v = 2;
my_tms = new OpenLayers.Layer.TMS(
    "My TMS",
    "my_mapserver.php?v="+my_var+"&",
     { transparent: 'true', type:'png', getURL:get_my_url }
);
my_tms.redraw();

However, these tiles are not getting requested when I redraw().

Any help is appreciated.

Oops... I meant to say my_var = 1 and my_var = 2 rather that v = 1 and v = 2. — Paul, Feb 07 '11 at 19:42

score 1 · Accepted Answer · answered Feb 07 '11 at 21:23

1

As TMS layers inherits from Grid layer you could try to call clearGrid() method to remove all existing tiles and then spiralTileLoad() to load new ones.

answered Feb 07 '11 at 21:23

igorti

3,828
3
22
29

Thank you! I found I did not need clearGrid(), but rather just my_tms.url = "my_mapserver.php?v="+my_var+"&"; my_tms.spiralTileLoad(); my_tms.redraw(); – Paul Feb 10 '11 at 17:25

score 0 · Answer 2 · answered Feb 11 '14 at 10:55

0

layer.redraw();, OpenLayers.Strategy.Refresh and clearGrid() didn't help me in reloading tiles of OpenLayers.Layer.TMS layer in OpenLayers 2.13.1, but helped:

layer.mergeNewParams({});

answered Feb 11 '14 at 10:55

rutsky

3,900
2
31
30

How do I refresh a TMS layer in OpenLayers?

2 Answers2