Thursday, Feb 28, 2019 at 10:27
Hi Austag,
To answer your second question first, there are inaccuracies in the system the extent of which depend on many variables which include your GPS hardware, number of visible satellites, signal quality (eg shading, reflections etc). Others more educated in this can probably help more with the details.
The net effect is that even though your device is stationary, the errors cause the position fix to be recalculated which can show up as movement. Depending on map scale this movement may or may not be visible. On a 250k map probably not, but on a large scale, detailed map, quite possible. I see it on a street directory page that I have scanned into Ozi. Regardless of whether or not you can see the apparent movement, the .plt file records what your system has calculated, just as it does when you move. That is what you are seeing.
Re your copy questions ...
"when you say Open, I gather I open as Text"
Yes.
"when you say copy the data lines, do you mean copy all the LONG/LAT co-ordinates?"
Yes, copy all the lines containing lat/long. Pages and pages, as you say. This is where the CTRL A or Copy All function is handy.
"how to do I copy all but the header?"
It might be easier to copy all, including the header, paste that, then remove the unwanted header lines in the middle of the document after pasting.
"If I tap and hold a keyboard just keeps coming up"
When I tap and hold I also get the screen keyboard. But I also get a highlighted section of text with the handles at each end and a pop-up menu with CUT, COPY, PASTE, CLIPBOARD, SHARE and three vertical dots.
Tap the three dots and choose SELECT ALL. The whole document (including the header, is selected and the above pop-up menu is presented again. Choose COPY, then back out of this file, navigate to the target file, scroll to the end, position the cursor, long press and PASTE.
Now scroll to where the unwanted header is, ie part way through the document, select it using the long press and handles method and CUT.
Now SAVE the combined file. Repeat as necessary.
If you can get access to a Bluetooth keyboard you might get the Windows CTRL functionality, or you might not. It depends on what Lenovo have done inside your tablet (hardware, customising Android, etc).
An external keyboard gives you back the screen real estate that the on-screen keyboard takes away. In a project such as yours that would be valuable. Can you borrow one to
test?
In any case if you frequently use your tablet on forums or to write documents, emails, etc, an external keyboard may be a worthwhile investment regardless of the possible absence of the CTRL functionality. Price varies. I got a very nice cheap one from Aldi for $30. I was also given a more substantial Logitech which I know cost about $150. Both incorporate a stand for the tablet to give you a laptop-like
work place with a full screen.
Cheers
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