annotation type layer with points

[zanollim]

I have a layer of points defined as TYPE ANNOTATION in my mapfile.

In the LABEL section I have POSITION auto, so MapServer calculates a label position that will not interfere with other labels.

The "problem" is that the default position with POSITION auto is "ul". I think that this is correct if the layer is of TYPE POINT, but if the layer is of TYPE ANNOTATION, the default position would be "cc" (like for polygons?)

If I tell explicitly mapserver to use POSITION cc, the labels are correctly drawn centered on their point, but overlapping labels are not managed.

Is my suggestion correct? Am I worng? Thanks a lot.

[sdlime]

The behavior you're seeing is intended, that is, the markers are always drawn centered on the computed label point. The only way to get the label to overlap the marker is to set POSITION CC. The AUTO placement doesn't use the CC at all. This is because I felt that if you want the overlap then you'd be explicit and set CC.

When you say overlapping labels are not managed with POSITION CC should not be the case. I use this config all the time when labeling lines with shields and road numbers. Do you have a specific test case that shows the error?

Sorry if I'm not following you correctly... Steve

[zanollim]

Steve, thanks a lot for your answer.

I have the following test case. The layer is a point layer. If the points are < 10 meters near, the labels are drawn overlapping. If I set FORCE FALSE, then only the first label is drawn, the other overlapping labels are missing.

Finally, if I set POSITION auto, the overlapping labels are correctly managed, but for all non overlapping labels the text is not placed centered on the point, but upper left (and this is not my wish)

Note that I use TYPE ANNOTATION because I do not want to see the points on the map, but only the texts.

See the png attached.

    LAYER
        NAME "zone_labels_08op_b_approv"
        [..]
        TYPE ANNOTATION
        STATUS OFF
        TEMPLATE void
        LABELITEM 'label'
        LABELMAXSCALEDENOM 15001
        MINSCALEDENOM 50
        SIZEUNITS meters
        METADATA
            "wms_enable_request"    "GetCapabilities !GetFeatureInfo"
        END
        CLASS
            LABEL
                TYPE TRUETYPE
                ANTIALIAS TRUE
                FONT arial-narrow-bold
                POSITION cc
                SIZE [size]
                MINSIZE 6
                FORCE TRUE
                COLOR 0 0 0
            END
        END
    END