In order to show or hide labels in QGIS 2.8, I currently right click a layer, select Properties, then Labels, then click the checkbox to show/hide, then click OK. This seems like quite a long-winded method for something that is quite simple in MapInfo – especially as I'm often switching one set of labels off then another on individually several times. Can anyone recommend any plugins? Perhaps a way to add "show/hide labels" to the right click menu for each loaded dataset in the Layers pane?
[GIS] Quickest method to show/hide labels in QGIS 2.8
labelingqgis-2
Related Solutions
Have you confirmed that there are not stacked points located in the third layer? If you have 2 points that are exactly in the same location and then default label them (both), you will end up with 2 labels that are labeled in the upper left and upper right, but looks like the text is being duplicated from one label point.
In the example below, you can see that 2020 & 2023 are single points and single labels. 2011 & 5367 are 2 points stacked perfectly on top of each other and therefore give the look that you describe. 2008 & 5355 shows a good example of "nearly stacked" points and labels that, if you zoomed out far enough, would eventually look like they were "stacked" and would eventually give you the "double label" effect.
To fix this, you would either need to eliminate the stacked points, or you could play with "Buffer" setting on the "Conflict Detection" tab of the label "Placement Properties" (this works is 9.3, not sure if the 10 dialog is the same).
Regarding the comment about two separate labels (one for the "rest of the map" and one for the labels): this is what I thought of as well, and it should be fairly easy to implement:
var url = "http://myserver.com/wms";
var background = new OpenLayers.Layer.WMS(
"Base Map",
url,
{layers: 'background'}
);
var labels = new OpenLayers.Layer.WMS(
"labels",
url,
{layers: 'labels'},
{displayInLayerSwitcher: false}
);
map.addLayers([background, layer]);
function toggleLabels() {
var was = labels.getVisibility();
labels.setVisibility(!was);
}
Best Answer
A very quick and dirty solution to this is to simply duplicate the layer with Label preferences. Then remove the label preferences from the duplicated layer. You now have 2 layers that are identical in symbology, one with labels and one without. Turn on and off the layer with labels to mimic the effect you are accustomed to in MIPro.