Place-n-Time map viewer

Mathematical tools, physics simulators, CAD, CNC, etc.
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amigo
Posts: 2629
Joined: Mon 02 Apr 2007, 06:52

#21 Post by amigo »

I'll ask again, are the sources available?

Jasper

#22 Post by Jasper »

amigo,

No, not yet.
-----------------
was your answer.

npierce
Posts: 858
Joined: Tue 29 Dec 2009, 01:40

#23 Post by npierce »

Karl, you got it! :D

That is good to see. :D :D

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Karl Godt
Posts: 4199
Joined: Sun 20 Jun 2010, 13:52
Location: Kiel,Germany

#24 Post by Karl Godt »

But very basic interface !

No scrollbars , apparently no text markers on the maps for easy orientation , using a better near view scale made 75% of the map unreachable .

Still lot of work to do ?

npierce
Posts: 858
Joined: Tue 29 Dec 2009, 01:40

#25 Post by npierce »

Karl Godt wrote:. . . apparently no text markers on the maps for easy orientation . . .
Yes, that is true.

The primary reason for that is that the map data files contain no name information other than the state, county, and sometimes the town (and even then they just have numbers that placentime_view looks up in another database). That's the information that you see in the lower right-hand corner. But I agree that having the text appear right on the map would make for easier orientation, since that could show multiple names and not require the user to point with the mouse to identify a town.

Highway route numbers are also available, and I hope to add those to the map. Currently they are only available by pointing at a road and using the context menu to choose What's This?.

As for other things like lakes, mountains, parks, and such, the map data files contain no names. I have tried to fill that hole with the GNIS (Geographic Names Information System) files. These are a separate data set, having no connection with the map data files. Based on the latitude and longitude of the point, choosing What's This? from the context menu will also provide the name of an object if the Show GNIS toggle button is set in the What's This? dialog. But again, I hope to eventually display them right on the map, selectively, depending upon the zoom level.

The original scope of this project was simply to create an application to specifically view these USGS "digital line graphs" (DLGs), not to create a general-purpose atlas type application which had been done many times before. Since there was very little name data in the DLG files, names were not originally a high priority.

However, now I would like the application to be useful to a wider audience, so certainly names will be a higher priority going forward.
Karl Godt wrote:. . . using a better near view scale made 75% of the map unreachable.
You should be able to drag the map around with the middle mouse button.
Karl Godt wrote:No scrollbars . . .
No. Scrollbars have limits. The surface of the earth does not. :)
Karl Godt wrote:Still lot of work to do ?
Always!

The list of the things I want to do seems almost as limitless as the surface of the earth. "What to do next?" is always a tough question. But getting good feedback from others helps me to decide where my priorities should lie.

Thanks for the good feedback.

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Karl Godt
Posts: 4199
Joined: Sun 20 Jun 2010, 13:52
Location: Kiel,Germany

#26 Post by Karl Godt »

You should be able to drag the map around with the middle mouse button.
Of course, all my mice have some awkward flaws, and this one has the button 3 not working but button 6 (forward thumb button) :D

Here a better shot, but would switch to google maps for now , probably because neighbor cards show too .
Dunno, are the forest boundaries black or dark green ?
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npierce
Posts: 858
Joined: Tue 29 Dec 2009, 01:40

#27 Post by npierce »

Karl Godt wrote:Dunno, are the forest boundaries black or dark green ?
In the intermediate scale data files, and I think in the large scale data files as well, state forest polygons are given an entity code that identifies them as a state forest or grassland. Place-n-Time displays the entire polygon in dark green.

In the small scale data files (as used for the map in your screen shot) state forest polygons have no entity code. Place-n-Time doesn't color those polygons, and their boundaries show as thin black lines.

By the way (as you may have already discovered), if you point to the white area just to the east of the state of Vermont map, you can use the context menu to load a small scale map of the state of New Hampshire adjacent to the Vermont map. You could do the same for the states to the west and south except that I didn't include them in the sample files. (Perhaps I should have included more sample maps, but I thought that the package was already a bit hefty, since it takes about 40 MiB when installed.)

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