More PM Tiles and Labels Questions

[muttleytm]

Have another question about mp tiles and labels. I have a number of geojson files converted to mp tiles. Some are georeferenced rasters of maps extracted as contours. Some are drawn polygon layers converted to geo json. Some are just the raster in pm tile form with nothing to label. Some have only one polygon while others have multiple polygons and each polygon has a unique name. The ones with just one polygon I can handle either by simply naming the layer the name of the polygon or making sure to include the layer name in tippecanoe.

I know I can extract a point map of centroids in qgis and it seems like I could make a table with whatever name value each point has and convert that to a pm tile and including the table label values and it seems like I might then be able to use tippicanoe to make this a pm tile with labels, I. Ideally it could be in the form of not a point cloud put a text cloud with
all the labels floating in space at the centroid position as text labels or you might have to select a centroid point to open a window displaying its name. This layer in the group would display names and the other would display the lines.

I see that I can create layer groups or folders in libre so it seems like I could make a group with tttingwo entries. One would be the point labels and the other would be the lines as pm tiles. a

Right now I find that I can make centroids in qgis, but only some of the layers have a centroid, not all of them and some that don’t are some that have a label associated with them. That is a qgis question for somewhere else.

PM tiles are totally new to me as is how to handle labeling them put pm tiles have been around for a while. So has labeling objects. Labeling is pretty common. It seems like others have had this same issue and worked something out.

If anyone can point me in the right direction I’d appreciate it. Thanks in advance

[giswqs]

PMTIles inherits attributes from the input GeoJSON. If you want PMTiles to have lablels, your input data need to have attributes.

If you are unsure about the data conversion, use ChatGPT or Gemini to help you.

[muttleytm]

I am aware that I can have attribute fields in the geojson and also that in tippecanoe I can add various switches to include the ones I want. In my case it is mainly Name which it seems in tippecanoe that is a reserved term. So it will be _Name. I didn’t think that would work with the get info setting but I see now that it does. So I do have that.

What I would like to do is the more traditional method of having a text label over an area. Not just more traditional in gis maps but going back to printed and drawn maps.

After I posted I thought maybe in qgis I could turn off the base layer and make the shape files transparent, but have the labels visible then export that in map layout as a tiff and then extract that as a contour and massage as necessary and then export as a geojson. Then convert that to a pm tile. I thought that might produce an overlay of labels for the polygons in the layer that was in alignment. It did sort of, but the text was quite large. I may go back and see what size it was while in qgis, but I don’t think it was set very large.

It just seems like other people may also have wanted to label pm.tiles this way and may have come up with some techniques. I also have some old trains from those maps that I’d like to label. They are lines that twist and turn.

I tried to use the few larger pm tiles that set as http links last night along with other layers just as embedded geojsons and it caused my browser anyway to bog down. I still have more to convert and can play around some more and might be able to use fewer embedded geojsons too.

Just thought someone else may have come up with a way to do this