A question for the OziExplorer Experts

Submitted: Saturday, Oct 17, 2009 at 14:13
ThreadID: 73082 Views:3213 Replies:6 FollowUps:5
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Hoping someone can help me out. I am trying to cut sections out of the OziCE Track Log File that I recorded on my recent trip across Aus a couple of times. The track file is the one that is automatically saved as ceTrack.plt and in this case has an unknown number of points but is representative of approx 12000km of roads and tracks.
What I want to do is copy sections of the track and save them as separate files. The file is about 5.5mb. I can load it into Ozi on my desktop and can see it in Show/Hide Track Control....but when I click on Show Track List the computer has an apoplectic fit and Ozi ceases to respond. I'm guessing that this has something to do the the shear number of tack point in the file.
Is there some way that I can select a section of track and save it as a separate file? Hope this question makes sense and thanks in advance.
Cheers
Pete
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Reply By: Geoff (Newcastle, NSW) - Saturday, Oct 17, 2009 at 14:21

Saturday, Oct 17, 2009 at 14:21
Hi Pete,
How good are you with a text editor such as Notepad?

The PLT files are just plain text. I use Notepad to copy sections out and paste them into a new file.

Then I just save the new file as say "Innamincka-to-Birdsville.plt" creating a brand new plot wihout editing the original.

Geoff

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Follow Up By: Patrol22 - Saturday, Oct 17, 2009 at 14:27

Saturday, Oct 17, 2009 at 14:27
Thanks Geoff....looking at that as your response came in. I'll try and figure how to navigate the bucket loads of track points in notepad.
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Follow Up By: Member - Fred B (NT) - Saturday, Oct 17, 2009 at 15:23

Saturday, Oct 17, 2009 at 15:23
Hi Pete,
keep your original file, make a copy of it (name it differently) then use it to "play'with. Example, when in note pad just delete the last 75% of the file and save it. Then open it in Ozi and see what you got. It will give you a good idea of the proportion of the file and an idea as too how much to save at a time. By making differnt files as Geoff sugested, you will soon end up with a useable set of track. Lesson... save your tracks more often (on your GPS) with usable names. Hope this helps,
regards
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Follow Up By: Member - John and Val - Saturday, Oct 17, 2009 at 20:05

Saturday, Oct 17, 2009 at 20:05
Pete,

A useful way of finding the point at which to cut is to display the map and position the cursor at the point on the map where you want to make your cut. Note the latitude and longitude (top left) of the cursor location. Open a copy of the plot file in a text editor and look through the listing for that lat/long.

Text editor - I use Word, which will handle the big text file, but note that you will need to save the edited file as a text file (.txt) to satisfy Word, then later rename it as something.plt to be recognised by Ozi.

Obviously you'll need to preserve the header text in the edited file/s.

HTH

John
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Reply By: The Explorer - Saturday, Oct 17, 2009 at 15:59

Saturday, Oct 17, 2009 at 15:59
Hi - using text editor as suggested is one method, and possibly the best in this instance given the number of points and the issue you have with viewing the actual track list. Just for the record books there is an inbuilt method for splitting tracks within OziE.

Splitting Track Sections into Individual Tracks

To split track sections into individual tracks, on the Track Control, select the track and press the "Split Track Sections into Separate Tracks" button (8th icon along the second row of buttons on the top of the Track Control). New tracks will be created in the track control for each track section. Then use the "save selected track" button to save each section (3rd icon along the second row of buttons on the top of the Track Control).

This may not work for you as I think there is a limit of 75 track sections (not sure) if you have 5,5mb of data have a feeling you have more than can be handled.

Another method is in the Track List, select the first point for the track to be saved, hold down the Shift key and select the last point for the track. The track points will be selected. (while holding the shift key, the down or up arrow can be used to select the track points). Click the Save button on the top of the Track List to save the selected points to a new track. Obviously you can use this method as you cant open the track list but maybe handy doing edits on track sections you create.

The latest version of OziCe (2.31) has the option to save track log files daily, weekly or monthly. I have mine set to daily - the file is saved automatically with date and time so its relatively easy to track down files as needed and you wont end up with the monster you have created.

Cheers
Greg

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Follow Up By: The Explorer - Saturday, Oct 17, 2009 at 16:01

Saturday, Oct 17, 2009 at 16:01
Sorry last sentence in 4th paragraph should read

Obviously you cant use this method as you cant open the track list but maybe handy doing edits on track sections you create.
I sent one final shout after him to stick to the track, to which he replied “All right,” That was the last ever seen of Gibson - E Giles 23 April 1874

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Reply By: Member - Chris & Debbie (QLD) - Saturday, Oct 17, 2009 at 17:27

Saturday, Oct 17, 2009 at 17:27
Hi Pete and others.
Have you tried the 'Track Filter' option in Ozi to cut down the number of track points? This filter removes points from straight sections of tracks which cuts down on the file size considerably, eg. one of my last track files was 7 meg, filtered is only 93kb. You can set how many points to filter out, with the best way just setting a fairly low 'Filter Index' and repeating several times untill the track is the size/look you want. This is a good way to keep a single track of your trip making it unnecessary to load several different tracks
The track filter contol is found under the 'More Options' in the Track Contol box.

Chris.
AnswerID: 387493

Reply By: HGMonaro - Saturday, Oct 17, 2009 at 17:39

Saturday, Oct 17, 2009 at 17:39
if you have to use the text editor method and Notepad can't hold it all (not sure of what it's limitations are these days) then there's a editor called "PFE" that can do files with lot's of lines
AnswerID: 387495

Reply By: Patrol22 - Saturday, Oct 17, 2009 at 18:30

Saturday, Oct 17, 2009 at 18:30
Thanks everyone I've copied and saved all of this info into a 'Help Pete Sort the Tracks' file. I will also download the latest ce version soonest.
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Reply By: Member - John Baas (WA) - Saturday, Oct 17, 2009 at 20:29

Saturday, Oct 17, 2009 at 20:29
Hi Pete, we save the file each evening into designated folder as day1; day2 etc - not to break it up but to make sure we don't lose the built file somehow.

At the end of the trip Ozi lets you aggregate all/some of the files as desired. See ThreadID: 70029.

Cheers.
AnswerID: 387519

Follow Up By: Sludgie - Sunday, Oct 18, 2009 at 10:15

Sunday, Oct 18, 2009 at 10:15
Gidday John,
I also do the same as you for each day and I also change the track colour to save some confusion. Four years ago I lost 6 days of track and made sure not to let this happen again.

Sludgie
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