1

I am trying to print a map using QGIS 3.6.

My study area is situated within 23.55’42”N 89.27’43”E to 23.55’47”N 89.95’01”E. I am using a Landsat image as map image, The map projection is EPSG 32645 (UTM).

When I am trying to add a grid to the map, the Lat and Lon point starts from 0.00 N and 0.00 E instead of my image's Lat-Lon value.

The second problem is, when I'm trying to input the interval units in map units, I am having black spots instead of values.

Here I have attached the screenshots:

enter image description here

enter image description here

enter image description here

enter image description here

  • 3
    In case you want your lables for your projected map in lat lon you need to change CRS to EPSG:4326 (Unit: degree). Using 32645, the Interval unit is in meters. (Also use map units, not centimeters). You might want also to take a look at this – MrXsquared May 8 at 16:31
3

If you have a projected map, e.g. a UTM-Projected polygon, but you want to draw a grid showing latitude and longitude you need to change your grid's CRS to EPSG:4326.

  1. UTM Grid

If you set up an UTM grid, your map units will be meters. An interval of x50000 and y50000 shows a grid every 50km. To use this, you must set your grid's CRS to UTM, e.g. EPSG:32645

enter image description here

  1. Lat Lng Grid

If you set up a LatLon grid, your map units will be degree. An interval of x1 and y1 shows a grid every 1°. Distance in meters depends on your location. To use this, you must set your grid's CRS to EPSG:4326.

enter image description here

  1. Both

Of course you can also use several grids at the same time:

enter image description here

If you are using centimeters as unit, then you will have a local "CRS" starting with 0 at your lower left corner, drawing a grid every few centimeter, depending on your interval. Same goes for millimeters as unit.

  • Dear @MrXsquared thank you so much. let me try and see what happened. – tawhid hossain May 11 at 14:11

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.