Map Calibration & Library

[Jack_Glendening]

First a big THANK YOU for the map calibration feature using 3 points!  I've been using that very often to investigate hiking trails which show up on some old maps but have been unused and overgrown.  It makes geo-referencing of old maps relatively easy and precise, unlike Google Earth's crude stretch/move methods. 

In using that and the "User Map Library" I have come up with some requests/hopes:

() In the User Map Library, when opening a file it would be nice to have an "all files" option - at present I have to remember/guess whether I created the map as a JPG or a PNG

() In the User Map Library, allow one to change the filename - sometimes I afterwards think of a better way of describing/naming that file but I can't change the filename because then I would have to re-do the map calibration

() When "calibrating" it would be nice to be able to first do a rough calibration and then refine it.  Currently after a calibration, when one
tries to refine it using "Calibrate Point" the existing calibration is lost so one has to go hunting all over to find the points again.  My idea is that it should be possible to first do a rough calibration, then zoom in on one of the calibration points, click "Calibrate Point" and have the map overlay unchanged at that point, so the overlay and background points will still be within that zoomed area.

Again, thanks for all your fine work, which has allowed me to do some things which other software cannot.

Jack Glendening

[Jack_Glendening]

Regarding my first request/hope, I later realized that perhaps the calibration process can only use certain image types, hence the selection process requires one to select only an image of those types.  If so, I can understand then leaving things as they are.

Jack Glendening

[Jack_Glendening]

PS: I also note that the "default" calibration, i.e. that which occurs when the map is first loaded, prior to any user calibration, seems to be to fit the opened TopoFusion window.  This means that its aspect ratio differs from that of the original map, often times making it difficult to work with.  It would be nicer if the original map aspect ratio were retained by the "default" calibration.

Jack Glendening   

[ScottMorris]

I do agree with your last point about it keeping the same aspect ratio.  I'll see if I can do that.

All files should be possible on point #1.

Point #3 is a little trickier.  Calibration could already have 3 points and then determining the point on the image you clicked is hard.  Not sure it'll be worth the effort.

#2 (how random order can I get?!) - yep, renaming would be great.

Thanks a lot for the feedback.  I'll see what I can do.

[HikeOrBike]

Following on with this discussion, I recently came upon TopoFusion and began experimenting with it as a supplement to/replacement for ExpertGPS. Over the years, I have accumulated numerous maps and ideally it would be nice for TopoFusion to import the existing work I've done. Realizing this may be out of the question, I must agree that TF's calibration process would be less tricky if the the original image aspect ratio was used initially. Many of my maps come up a bit weird making it difficult to place the calibration points. Also, as an alternative calibration method, could you please consider a change so that clicking a known point on the map produces a dialog box to enter coordinates for that point, repeating this process for the remaining 2-3 points. This works well for some of my GPS-friendly park/trail maps that have crosshairs at known locations.

Thanks!