From marcusconrad at hotmail.com  Sat Aug  1 15:46:44 2020
From: marcusconrad at hotmail.com (Marcus Conrad)
Date: Sat, 1 Aug 2020 22:46:44 +0000
Subject: [FOSS-GPS] GPS static post processing
Message-ID: <VI1P195MB033559D3ED574066623B246FC14F0@VI1P195MB0335.EURP195.PROD.OUTLOOK.COM>

Hi, I am new to this list and this is my first post. I am a site engineer with an interest in drone mapping.

I have limited experience of using GPS and wish use it for setting up control and GCP’s.

I have borrowed a Leica RX1250 and antenna. I have currently an issue with the native/binary m00 files not being generated but also am not sure if I am post processing correctly or what to do with the data I have.

I have converted the .m00 file in teqc to a RINEX pos and obs file. I have downloaded local CORS RINEX data (I am in the UK, OSNet), I have downloaded the relevant sp3/epehmeris data from IGS. I have used RTKLib to process these but not sure what to do with the positions generated. Naively I was expecting one position.



[cid:image001.png at 01D6685E.028FC780]Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10

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From bubunhhh at gmail.com  Sat Aug  1 20:54:57 2020
From: bubunhhh at gmail.com (atanu santra)
Date: Sun, 2 Aug 2020 09:24:57 +0530
Subject: [FOSS-GPS] FOSS-GPS Digest, Vol 124, Issue 1
In-Reply-To: <mailman.106230.1596322009.17185.foss-gps@lists.osgeo.org>
References: <mailman.106230.1596322009.17185.foss-gps@lists.osgeo.org>
Message-ID: <CADLYUbhV6XHNhWPO2zKWRT=PT0MmxiS+eeQ4iy6GZTkdTnbaqA@mail.gmail.com>

Dear sir,

It seems you need precise position.
1. You may use rtklib with the option static ppp. Dual frequency
ionospheric correction would be used. You will get ppp points. Take an
average of those points.
2. You may use online processing services like AUSPOS, OPUS and NRCAN for
precise one point. But yes dual frequency RINEX observables are necessary
for this online ppp services.

Thanks and Regards
Atanu Santra


On Sun, 2 Aug 2020 4:17 am , <foss-gps-request at lists.osgeo.org> wrote:

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>    1. GPS static post processing (Marcus Conrad)
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> Message: 1
> Date: Sat, 1 Aug 2020 22:46:44 +0000
> From: Marcus Conrad <marcusconrad at hotmail.com>
> To: "  foss-gps at lists.osgeo.org" <foss-gps at lists.osgeo.org>
> Subject: [FOSS-GPS] GPS static post processing
> Message-ID:
>         <
> VI1P195MB033559D3ED574066623B246FC14F0 at VI1P195MB0335.EURP195.PROD.OUTLOOK.COM
> >
>
> Content-Type: text/plain; charset="windows-1252"
>
> Hi, I am new to this list and this is my first post. I am a site engineer
> with an interest in drone mapping.
>
> I have limited experience of using GPS and wish use it for setting up
> control and GCP’s.
>
> I have borrowed a Leica RX1250 and antenna. I have currently an issue with
> the native/binary m00 files not being generated but also am not sure if I
> am post processing correctly or what to do with the data I have.
>
> I have converted the .m00 file in teqc to a RINEX pos and obs file. I have
> downloaded local CORS RINEX data (I am in the UK, OSNet), I have downloaded
> the relevant sp3/epehmeris data from IGS. I have used RTKLib to process
> these but not sure what to do with the positions generated. Naively I was
> expecting one position.
>
>
>
> [cid:image001.png at 01D6685E.028FC780]Sent from Mail<
> https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10
>
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From m at milesalan.com  Sat Aug  8 06:24:40 2020
From: m at milesalan.com (Miles Alan)
Date: Sat, 08 Aug 2020 08:24:40 -0500
Subject: [FOSS-GPS] Patches to fix foxtrotgps 1.2.2 for gpsd-dev 3.21
Message-ID: <2CGRFJIIU3061.2918POYH0TL5B@milesalan.com>

Hi list - foxtrotgps has stopped building against gpsd-dev as of gps-dev
3.21. I'm the maintainer for the Alpine package of foxtrotgps - a new
version of foxtrotgps that builds cleanly against the latest gpsd-dev
would be greately appreciated.  In order to fix the compatability,
there are two small patches I've applied which maybe could eventually
be upstreamed. Diffs below, thanks - Miles.

diff --git a/src/gps_functions.c b/src/gps_functions.c
index 9943b6b..c3d087a 100644
--- a/src/gps_functions.c
+++ b/src/gps_functions.c
@@ -762,7 +762,7 @@ cb_gpsd_data(GIOChannel *src, GIOCondition condition, gpointer data)
                {
                        gpsdata->fix.time = (time_t) 0;
                }
-               gpsdata->valid = (libgps_gpsdata.status != STATUS_NO_FIX);
+               gpsdata->valid = (libgps_gpsdata.fix.status != STATUS_NO_FIX);
                if (gpsdata->valid)
                {
                        gpsdata->seen_valid = TRUE;


diff --git a/src/gps_functions.c b/src/gps_functions.c
index 04f88e0..e3df086 100644
--- a/src/gps_functions.c
+++ b/src/gps_functions.c
@@ -752,7 +752,7 @@ cb_gpsd_data(GIOChannel *src, GIOCondition condition, gpointer data)
        {
                gpsdata->satellites_used = libgps_gpsdata.satellites_used;
                gpsdata->hdop = libgps_gpsdata.dop.hdop;
-               gpsdata->fix.time = libgps_gpsdata.fix.time;
+               gpsdata->fix.time = libgps_gpsdata.fix.time.tv_nsec;
                if (isnan(gpsdata->fix.time))
                {
                        gpsdata->fix.time = (time_t) 0;

From jra at febo.com  Mon Aug 24 11:32:30 2020
From: jra at febo.com (John Ackermann N8UR)
Date: Mon, 24 Aug 2020 14:32:30 -0400
Subject: [FOSS-GPS] Program to create survey-like map?
Message-ID: <cf20baef-5b00-8fcc-6759-22202717f82c@febo.com>

Hi --

I'm looking for a program that would input multiple lat/lon positions 
and plot them, showing bearing and distance between the various points. 
Does such a thing exist?

Thanks!

John

From jochen.peters at uni-duesseldorf.de  Mon Aug 24 12:16:35 2020
From: jochen.peters at uni-duesseldorf.de (Jochen Peters)
Date: Mon, 24 Aug 2020 21:16:35 +0200
Subject: [FOSS-GPS] Program to create survey-like map?
In-Reply-To: <cf20baef-5b00-8fcc-6759-22202717f82c@febo.com>
References: <cf20baef-5b00-8fcc-6759-22202717f82c@febo.com>
Message-ID: <20200824211458.383d679e@uni-duesseldorf.de>

Hi John,

I had a similar problem: I couldn't find a program with which I could load and display tracks including distances. In my case I had the additional problem that I wanted to draw and save these tracks myself.

I then looked at the code of foxtrotgps and made a few changes:

- when loading lat/lon lists the distances per waypoint are displayed on the terminal
- when measuring a multi-point distance, each point with distance is copied to the clipboard (instead of only the last point)

The first point would be interesting for you, even if no bearing is calculated. Unfortunately I didn't get any feedback from foss-gps if these additional functions are wanted and so I never made an attempt to get this change applied to "the original foxtrotgps".

If you can program by yourself, you can have a look at my changes. So when loading tacks you might be able to quickly add the desired calculations by yourself:

https://bazaar.launchpad.net/~deadlockz/+junk/jochen/revision/325

kind regards
Jochen

Am Mon, 24 Aug 2020 14:32:30 -0400
schrieb John Ackermann N8UR <jra at febo.com>:

> Hi --
> 
> I'm looking for a program that would input multiple lat/lon positions 
> and plot them, showing bearing and distance between the various
> points. Does such a thing exist?
> 
> Thanks!
> 
> John
> _______________________________________________
> This message is sent to you from FOSS-GPS at lists.osgeo.org mailing
> list. Visit https://lists.osgeo.org/mailman/listinfo/foss-gps to
> manage your subscription For more information, check
> http://wiki.osgeo.org/wiki/FOSS-GPS

From jra at febo.com  Mon Aug 24 13:29:06 2020
From: jra at febo.com (John Ackermann N8UR)
Date: Mon, 24 Aug 2020 16:29:06 -0400
Subject: [FOSS-GPS] Program to create survey-like map?
In-Reply-To: <20200824211458.383d679e@uni-duesseldorf.de>
References: <cf20baef-5b00-8fcc-6759-22202717f82c@febo.com>
 <20200824211458.383d679e@uni-duesseldorf.de>
Message-ID: <6e4daa73-77ea-0937-4520-feeed6df9e6a@febo.com>

Thanks, Jochen!

I am not familiar with foxtrotgps but will look at it.  I think it may 
be overkill for my needs but maybe not.  One thing is that I'm talking 
about small distances -- spacing of <50 meters between points, usually.

I probably have the Python code available to fairly easily read a list 
of lat/lon and calculate distance/bearing between each pair.  What I 
don't have is the knowledge to then plot that onto a sheet to a sheet to 
create what looks like a survey map with boundaries and markers.

John
----

On 8/24/20 3:16 PM, Jochen Peters wrote:
> Hi John,
> 
> I had a similar problem: I couldn't find a program with which I could load and display tracks including distances. In my case I had the additional problem that I wanted to draw and save these tracks myself.
> 
> I then looked at the code of foxtrotgps and made a few changes:
> 
> - when loading lat/lon lists the distances per waypoint are displayed on the terminal
> - when measuring a multi-point distance, each point with distance is copied to the clipboard (instead of only the last point)
> 
> The first point would be interesting for you, even if no bearing is calculated. Unfortunately I didn't get any feedback from foss-gps if these additional functions are wanted and so I never made an attempt to get this change applied to "the original foxtrotgps".
> 
> If you can program by yourself, you can have a look at my changes. So when loading tacks you might be able to quickly add the desired calculations by yourself:
> 
> https://bazaar.launchpad.net/~deadlockz/+junk/jochen/revision/325
> 
> kind regards
> Jochen
> 
> Am Mon, 24 Aug 2020 14:32:30 -0400
> schrieb John Ackermann N8UR <jra at febo.com>:
> 
>> Hi --
>>
>> I'm looking for a program that would input multiple lat/lon positions
>> and plot them, showing bearing and distance between the various
>> points. Does such a thing exist?
>>
>> Thanks!
>>
>> John
>> _______________________________________________
>> This message is sent to you from FOSS-GPS at lists.osgeo.org mailing
>> list. Visit https://lists.osgeo.org/mailman/listinfo/foss-gps to
>> manage your subscription For more information, check
>> http://wiki.osgeo.org/wiki/FOSS-GPS
> _______________________________________________
> This message is sent to you from FOSS-GPS at lists.osgeo.org mailing list.
> Visit https://lists.osgeo.org/mailman/listinfo/foss-gps to manage your subscription
> For more information, check http://wiki.osgeo.org/wiki/FOSS-GPS
> 

From don6019 at gmail.com  Mon Aug 24 15:05:53 2020
From: don6019 at gmail.com (Don Cameron)
Date: Tue, 25 Aug 2020 08:05:53 +1000
Subject: [FOSS-GPS] Program to create survey-like map?
In-Reply-To: <6e4daa73-77ea-0937-4520-feeed6df9e6a@febo.com>
References: <cf20baef-5b00-8fcc-6759-22202717f82c@febo.com>
 <20200824211458.383d679e@uni-duesseldorf.de>
 <6e4daa73-77ea-0937-4520-feeed6df9e6a@febo.com>
Message-ID: <CANVHF9VXx14d0pA2eohd5m_2AumetZANRdHiYQikSnLeOd3i_w@mail.gmail.com>

If you can use Python then take a look at Matplotlib it can do all your
plotting needs.

If you need help send me an example of your data.


On Tue, 25 Aug 2020 06:29 John Ackermann N8UR <jra at febo.com> wrote:

> Thanks, Jochen!
>
> I am not familiar with foxtrotgps but will look at it.  I think it may
> be overkill for my needs but maybe not.  One thing is that I'm talking
> about small distances -- spacing of <50 meters between points, usually.
>
> I probably have the Python code available to fairly easily read a list
> of lat/lon and calculate distance/bearing between each pair.  What I
> don't have is the knowledge to then plot that onto a sheet to a sheet to
> create what looks like a survey map with boundaries and markers.
>
> John
> ----
>
> On 8/24/20 3:16 PM, Jochen Peters wrote:
> > Hi John,
> >
> > I had a similar problem: I couldn't find a program with which I could
> load and display tracks including distances. In my case I had the
> additional problem that I wanted to draw and save these tracks myself.
> >
> > I then looked at the code of foxtrotgps and made a few changes:
> >
> > - when loading lat/lon lists the distances per waypoint are displayed on
> the terminal
> > - when measuring a multi-point distance, each point with distance is
> copied to the clipboard (instead of only the last point)
> >
> > The first point would be interesting for you, even if no bearing is
> calculated. Unfortunately I didn't get any feedback from foss-gps if these
> additional functions are wanted and so I never made an attempt to get this
> change applied to "the original foxtrotgps".
> >
> > If you can program by yourself, you can have a look at my changes. So
> when loading tacks you might be able to quickly add the desired
> calculations by yourself:
> >
> > https://bazaar.launchpad.net/~deadlockz/+junk/jochen/revision/325
> >
> > kind regards
> > Jochen
> >
> > Am Mon, 24 Aug 2020 14:32:30 -0400
> > schrieb John Ackermann N8UR <jra at febo.com>:
> >
> >> Hi --
> >>
> >> I'm looking for a program that would input multiple lat/lon positions
> >> and plot them, showing bearing and distance between the various
> >> points. Does such a thing exist?
> >>
> >> Thanks!
> >>
> >> John
> >> _______________________________________________
> >> This message is sent to you from FOSS-GPS at lists.osgeo.org mailing
> >> list. Visit https://lists.osgeo.org/mailman/listinfo/foss-gps to
> >> manage your subscription For more information, check
> >> http://wiki.osgeo.org/wiki/FOSS-GPS
> > _______________________________________________
> > This message is sent to you from FOSS-GPS at lists.osgeo.org mailing list.
> > Visit https://lists.osgeo.org/mailman/listinfo/foss-gps to manage your
> subscription
> > For more information, check http://wiki.osgeo.org/wiki/FOSS-GPS
> >
> _______________________________________________
> This message is sent to you from FOSS-GPS at lists.osgeo.org mailing list.
> Visit https://lists.osgeo.org/mailman/listinfo/foss-gps to manage your
> subscription
> For more information, check http://wiki.osgeo.org/wiki/FOSS-GPS
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From jra at febo.com  Mon Aug 24 16:40:57 2020
From: jra at febo.com (John Ackermann N8UR)
Date: Mon, 24 Aug 2020 19:40:57 -0400
Subject: [FOSS-GPS] Program to create survey-like map?
In-Reply-To: <CANVHF9VXx14d0pA2eohd5m_2AumetZANRdHiYQikSnLeOd3i_w@mail.gmail.com>
References: <cf20baef-5b00-8fcc-6759-22202717f82c@febo.com>
 <20200824211458.383d679e@uni-duesseldorf.de>
 <6e4daa73-77ea-0937-4520-feeed6df9e6a@febo.com>
 <CANVHF9VXx14d0pA2eohd5m_2AumetZANRdHiYQikSnLeOd3i_w@mail.gmail.com>
Message-ID: <fc748540-a0a7-3d66-488f-3a6cdb0b7f2a@febo.com>

Hi Don --

Hmmm, I might take you up on that.  I have a simple program that will 
take a list of lat1,lon1,lat2,lon2 tuples and output the distance (in 
meters) and bearing (in degrees) for each one.

What I'm trying to figure out is how to take that list and put it on a 
blank sheet with each point shown relative to some origin, and the 
distance/bearing between them shown.

As a simple example, picture an overhead drawing of a baseball diamond 
(sorry for being US-centric!) with first, second, third bases and home 
plate shown relative to the pitcher's mound, and the bearing/distance 
from the mound to each one shown.

I've used Matplotlib by hacking on code someone else wrote, but I don't 
know how to begin to start something from scratch with it.

Thanks,
John

PS -- if you want, we can go off list.  My email is j r a at f e b o dot 
c o m

----

On 8/24/20 6:05 PM, Don Cameron wrote:
> If you can use Python then take a look at Matplotlib it can do all your 
> plotting needs.
> 
> If you need help send me an example of your data.
> 
> 
> On Tue, 25 Aug 2020 06:29 John Ackermann N8UR <jra at febo.com 
> <mailto:jra at febo.com>> wrote:
> 
>     Thanks, Jochen!
> 
>     I am not familiar with foxtrotgps but will look at it.  I think it may
>     be overkill for my needs but maybe not.  One thing is that I'm talking
>     about small distances -- spacing of <50 meters between points, usually.
> 
>     I probably have the Python code available to fairly easily read a list
>     of lat/lon and calculate distance/bearing between each pair.  What I
>     don't have is the knowledge to then plot that onto a sheet to a
>     sheet to
>     create what looks like a survey map with boundaries and markers.
> 
>     John
>     ----
> 
>     On 8/24/20 3:16 PM, Jochen Peters wrote:
>      > Hi John,
>      >
>      > I had a similar problem: I couldn't find a program with which I
>     could load and display tracks including distances. In my case I had
>     the additional problem that I wanted to draw and save these tracks
>     myself.
>      >
>      > I then looked at the code of foxtrotgps and made a few changes:
>      >
>      > - when loading lat/lon lists the distances per waypoint are
>     displayed on the terminal
>      > - when measuring a multi-point distance, each point with distance
>     is copied to the clipboard (instead of only the last point)
>      >
>      > The first point would be interesting for you, even if no bearing
>     is calculated. Unfortunately I didn't get any feedback from foss-gps
>     if these additional functions are wanted and so I never made an
>     attempt to get this change applied to "the original foxtrotgps".
>      >
>      > If you can program by yourself, you can have a look at my
>     changes. So when loading tacks you might be able to quickly add the
>     desired calculations by yourself:
>      >
>      > https://bazaar.launchpad.net/~deadlockz/+junk/jochen/revision/325
>      >
>      > kind regards
>      > Jochen
>      >
>      > Am Mon, 24 Aug 2020 14:32:30 -0400
>      > schrieb John Ackermann N8UR <jra at febo.com <mailto:jra at febo.com>>:
>      >
>      >> Hi --
>      >>
>      >> I'm looking for a program that would input multiple lat/lon
>     positions
>      >> and plot them, showing bearing and distance between the various
>      >> points. Does such a thing exist?
>      >>
>      >> Thanks!
>      >>
>      >> John
>      >> _______________________________________________
>      >> This message is sent to you from FOSS-GPS at lists.osgeo.org
>     <mailto:FOSS-GPS at lists.osgeo.org> mailing
>      >> list. Visit https://lists.osgeo.org/mailman/listinfo/foss-gps to
>      >> manage your subscription For more information, check
>      >> http://wiki.osgeo.org/wiki/FOSS-GPS
>      > _______________________________________________
>      > This message is sent to you from FOSS-GPS at lists.osgeo.org
>     <mailto:FOSS-GPS at lists.osgeo.org> mailing list.
>      > Visit https://lists.osgeo.org/mailman/listinfo/foss-gps to manage
>     your subscription
>      > For more information, check http://wiki.osgeo.org/wiki/FOSS-GPS
>      >
>     _______________________________________________
>     This message is sent to you from FOSS-GPS at lists.osgeo.org
>     <mailto:FOSS-GPS at lists.osgeo.org> mailing list.
>     Visit https://lists.osgeo.org/mailman/listinfo/foss-gps to manage
>     your subscription
>     For more information, check http://wiki.osgeo.org/wiki/FOSS-GPS
> 
> 
> _______________________________________________
> This message is sent to you from FOSS-GPS at lists.osgeo.org mailing list.
> Visit https://lists.osgeo.org/mailman/listinfo/foss-gps to manage your subscription
> For more information, check http://wiki.osgeo.org/wiki/FOSS-GPS
> 

From stephen.filmer at gmail.com  Mon Aug 24 16:49:32 2020
From: stephen.filmer at gmail.com (Foresoft)
Date: Tue, 25 Aug 2020 09:49:32 +1000
Subject: [FOSS-GPS] Program to create survey-like map?
In-Reply-To: <cf20baef-5b00-8fcc-6759-22202717f82c@febo.com>
References: <cf20baef-5b00-8fcc-6759-22202717f82c@febo.com>
Message-ID: <CACLiVfHcC0f32NmxVXX=ndKkf7imTUH7Y5+r+pRtj45b-ucHow@mail.gmail.com>

Lots of GIS and survey programs will do this. I write a commercial survey
program that you can trial for 2 months for no charge. Go to
www.foresoft.com look top left and download CDS trial. You can import a
ascii csv (comma separated variables) which contains the lat/lons. You can
then get bearings and distances.

Regards Steve

On Tue, Aug 25, 2020 at 4:32 AM John Ackermann N8UR <jra at febo.com> wrote:

> Hi --
>
> I'm looking for a program that would input multiple lat/lon positions
> and plot them, showing bearing and distance between the various points.
> Does such a thing exist?
>
> Thanks!
>
> John
> _______________________________________________
> This message is sent to you from FOSS-GPS at lists.osgeo.org mailing list.
> Visit https://lists.osgeo.org/mailman/listinfo/foss-gps to manage your
> subscription
> For more information, check http://wiki.osgeo.org/wiki/FOSS-GPS
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From jochen.peters at uni-duesseldorf.de  Tue Aug 25 13:21:06 2020
From: jochen.peters at uni-duesseldorf.de (Jochen Peters)
Date: Tue, 25 Aug 2020 22:21:06 +0200
Subject: [FOSS-GPS] Program to create survey-like map?
In-Reply-To: <6e4daa73-77ea-0937-4520-feeed6df9e6a@febo.com>
References: <cf20baef-5b00-8fcc-6759-22202717f82c@febo.com>
 <20200824211458.383d679e@uni-duesseldorf.de>
 <6e4daa73-77ea-0937-4520-feeed6df9e6a@febo.com>
Message-ID: <20200825222106.48517f8c@uni-duesseldorf.de>

Hi John,

Try to figure out how to create bitmap (bmp) files with python and then draw points and lines there. Then you can use very little mathematics to display the region you want to represent on e.g. 1000x1000 pixels.  For example, Europe goes from lon -10.0 to +25.0 and from lat 35.0 to 70.0. You can then scale 35 degrees in x and y direction to 1000 pixels. If your region is only limited to about 50m, then this projection is not so faulty.

foxtrotgps can only load a single route and display it on a map - so it's nothing for e.g. displaying the outlines of several buildings. I have made the experience that many OSM and map tools can do too much and overstrain you or don't have the exact function you need.

Here is a small c++ code example (and an image as attachment, where I used this lat/lon projection to x,y):

// europa: lon  -10..25
//         lat   35..70

#define LAT_BOUND_START  35.0
#define LON_BOUND_START -10.0
#define LAT_BOUND_DIF 35.0
#define LON_BOUND_DIF 35.0

#define IMAGE_WIDTH         8000
#define IMAGE_HEIGHT        8000

...

void drawFunc(double lon, double lat) {
 int x,y;
 lon = lon - LON_BOUND_START; // this maps -10.0 to 0.0
 lat = lat - LAT_BOUND_START; 
 x = IMAGE_WIDTH*(lon/LON_BOUND_DIF);
 y = IMAGE_HEIGHT - IMAGE_HEIGHT*(lat/LAT_BOUND_DIF);
 placePixel(x,y,WHITE);
}

Am Mon, 24 Aug 2020 16:29:06 -0400
schrieb John Ackermann N8UR <jra at febo.com>:

> Thanks, Jochen!
> 
> I am not familiar with foxtrotgps but will look at it.  I think it
> may be overkill for my needs but maybe not.  One thing is that I'm
> talking about small distances -- spacing of <50 meters between
> points, usually.
> 
> I probably have the Python code available to fairly easily read a
> list of lat/lon and calculate distance/bearing between each pair.
> What I don't have is the knowledge to then plot that onto a sheet to
> a sheet to create what looks like a survey map with boundaries and
> markers.
> 
> John
> ----
> 
> On 8/24/20 3:16 PM, Jochen Peters wrote:
...
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