Pages question

[David Staveley]

On page 124 of the user manual (version 20150206) it says :

Since each page has its own coordinate system, you may want to use Pages to quickly transfer coordinates by copying or moving a point to another page with the desired coordinate system.

This would be very useful to me, but I can't work out how to do it. Am I missing the relevant bit in the manual?

Thanks

 

[Kelly Bellis]

This portion of the manual was prepared by Matthew Johnson, dated September 4, 2014. He'll be best to answer your questions as to how to transfer one point on pageN to another page.

 

[Matt Johnson]

To change the page a point is from the Points menu select the point you wish to edit and press the Edit button (box with the pencil), select the top middle box with the point name inside it, then click the Page button and choose the desired page.

 

[David Staveley]

Is it possible to copy it rather than change it as per that text?
I have to produce 2 sets of coordinates.

 

[Matt Johnson]

To copy a point, from the Design Tab in the Points screen choose Add Point (plus symbol) and then Select From List and select the desired point and press Add Point.

Also I believe a more advanced point coping feature is currently being worked on which will allow copying points between projects.

 

[David Staveley]

Many thanks for your help, I'll give that a go tonight.

 

[David Staveley]

That worked great, but has raised another issue. When I originally enquired about buying a Triumph-LS, I asked whether or not it supported the OSTN02 modification to OSGB36. I was told it did. To test this, I picked a random spot, recorded a point in ETRS89, copied the point as above to OSGB36 in page 1 and also converted the point using Ordnance Survey's own coordinate transformer tool :

http://www.ordnancesurvey.co.uk/gps/transformation

Here is the comparison. The difference is 2.06 metres.

Type,N,E,Z
ETRS89,50.783279021,0.252041597,105.6702
Javad,100606.6601,558852.7012,60.9484
OS,100607.162,558850.697,61
Diff,0.5019,2.0042,0.0516

Can you confirm if OSTN02 really is supported, or if I am doing something wrong?

Cheers

 

[Kelly Bellis]

Hi David, this is a great question for Vladimir Prasolov, our Senior Software Engineer at the JAVAD GNSS, Inc Moscow Research Center and I've asked him to chime in to this discussion.

This is also a great question in raising my own appreciation that geodetic life exists beyond NGS

 

[Vladimir Prasolov]

Dear David,

We are supporting OSGB36&ODN (OSTN02&OSGM02) coordinate system, that is fully compatible with Ordance Survey.

Please follow following steps to create that coordinate system:

DO NOT PUSH TRANSFORMATON BUTTON. Just clkick "Done".

 

[Vladimir Prasolov]

Create test point:

 

[Vladimir Prasolov]

Sorry, I input wrong coordinates. The following position is correct in ETR89:

Just change page to OSGB 1936 British National Grid:

Control coordinates:

JAVAD Triumph-LS: 100607.1620, 558850.6961, 60.9994
Ordnance Survey: 100607.162, 558850.697, 61

 

[Vladimir Prasolov]

The correct map is:

 

[David Staveley]

Thank you so much for helping me sort that out! The transform is correct now.
Is there any reason why OSGB36 can't default to using that datum?

 

[Vladimir Prasolov]

Ordance Survey provided 41 reference points. I loadedd all of them in Triumph-LS:

Then I loaded reference coordinates and compare them in Localization tool (with identical localization):

 

[Vladimir Prasolov]

Thank you so much for helping me sort that out! The transform is correct now.
Is there any reason why OSGB36 can't default to using that datum?

Currently we have defaults only for fundamental reference frames as ITRFxx, NAD83, and ETRS89. Adding more defaults will create difficulties for users due to size of list. But for regional dealers or customer support it could be good practice to add all regional coordinate systems into device. Really we have good possibility to share system definitions through Export/Import feature (e.g. USB flash memory, DropBox will be available in public version too). I archived and attached that exported JCS file.