QTopo - Background sketch

You can add a background sketch to the drawing window, to help you make the drawing. To do this click on the Sketch command button of the drawing window. This ask you for a PNG image file, hopefully the image of a cave sketch, and displays it in the background sketch window.

Command buttons

You have to select some station points in the image so that QTopo knows how to insert it as background. Two stations are the minimum requirement. To select a station click on it on the image: it will be maked by a cross and a dialog will ask you the station name. Type it in and click the "OK" button: now the station name appears near the cross.

When you are done click the "OK" command button. The image will be imported as background sketch in the drawing window. Be aware that the background sketch is not saved with the drawing. Therefore you lose it when you close the drawing window.