Re: [Qgis-user] True North

2018-04-04 Thread Alexandre Neto
ot; wrote: >>> >>> I had a quick go at it after I wrote the email. What I did was to first >>> create a custom projection with the proj-string “+proj=merc”. Then I opened >>> the layout editor, inserted my map and added to sets of grid lines to the >>> ma

Re: [Qgis-user] True North

2018-04-04 Thread Springfield Harrison
UTM one) and for the >> other I used my custom CRS. This immediately gave me two grids, one where >> the meridians is oriented at the grid north (black in the attached image) >> and one oriented at true north (red in the attached image). >> >> >> >> /Kristian >&

Re: [Qgis-user] True North

2018-04-04 Thread Kristian Evers
And the image… https://imgur.com/a/l8Zpq Fra: Qgis-user [mailto:qgis-user-boun...@lists.osgeo.org] På vegne af Kristian Evers Sendt: 4. april 2018 16:37 Til: qgis-user@lists.osgeo.org Emne: Re: [Qgis-user] True North I made it within the Layout Composer/Editor (what it’s called in QGIS3 escapes

Re: [Qgis-user] True North

2018-04-04 Thread Springfield Harrison
t with the original CRS (the UTM one) and for the > other I used my custom CRS. This immediately gave me two grids, one where > the meridians is oriented at the grid north (black in the attached image) > and one oriented at true north (red in the attached image). > > > > /Krist

Re: [Qgis-user] True North

2018-04-04 Thread Kristian Evers
geo.org>; Kristian Evers mailto:kr...@sdfe.dk>> Emne: Re: [Qgis-user] True North OK, that sounds like the solution I'm looking for. It sounds like the answer is to draw the lines in one projection and then transform it to the other, depending upon which orientation is desired for t

Re: [Qgis-user] True North

2018-04-04 Thread Springfield Harrison
t:* 3. april 2018 22:52 > *Til:* qgis-user@lists.osgeo.org; Kristian Evers > *Emne:* Re: [Qgis-user] True North > > > > OK, that sounds like the solution I'm looking for. > > It sounds like the answer is to draw the lines in one projection and then > transform it to t

Re: [Qgis-user] True North

2018-04-04 Thread Andreas Neumann
Neumann > FECHA: miércoles, 4 de abril de 2018, 08:41 > PARA: > ASUNTO: Re: [Qgis-user] True North > > Dear Daniel, > > Harrison just meant that is not nice to "hijack" an existing topic thread. If > you have a different issue, you should start a new e-ma

Re: [Qgis-user] True North

2018-04-04 Thread Daniel Alejandro Montecinos Rubilar
, what you refered? The question is not understood or there is no solution? De: Springfield Harrison Organización: Stellar GPS & Mapping Fecha: martes, 3 de abril de 2018, 17:53 Para: Daniel Alejandro Montecinos Rubilar CC: Asunto: Re: [Qgis-user] True North Hello Daniel, You are on qui

Re: [Qgis-user] True North

2018-04-04 Thread Andreas Neumann
ered?  The question is not understood or there is no solution? *De: *Springfield Harrison *Organización: *Stellar GPS & Mapping *Fecha: *martes, 3 de abril de 2018, 17:53 *Para: *Daniel Alejandro Montecinos Rubilar *CC: * *Asunto: *Re: [Qgis-user] True North Hello Daniel, You are on quite a d

Re: [Qgis-user] True North

2018-04-04 Thread Daniel Alejandro Montecinos Rubilar
Dear, what you refered?  The question is not understood or there is no solution? De: Springfield Harrison Organización: Stellar GPS & Mapping Fecha: martes, 3 de abril de 2018, 17:53 Para: Daniel Alejandro Montecinos Rubilar CC: Asunto: Re: [Qgis-user] True North Hello Daniel, You

Re: [Qgis-user] True North

2018-04-03 Thread Springfield Harrison
Hello Daniel, You are on quite a different topic here. I think you should repost your inquiry using a different subject… Cheers . . . . . Springfield Harrison On 03-Apr-2018 06:35, Daniel Alejandro Montecinos Rubilar wrote: *Good Morning,* ** I have a query, I have use Mapinfo for severa

Re: [Qgis-user] True North

2018-04-03 Thread Springfield Harrison
have a set of lines pointing towards true north instead of grid north. /Kristian *Fra:*Qgis-user [mailto:qgis-user-boun...@lists.osgeo.org] *På vegne af *Alexandre Neto *Sendt:* 3. april 2018 11:15 *Til:* Springfield Harrison *Cc:* qgis-user *Emne:* Re: [Qgis-user] True North Maybe some

Re: [Qgis-user] True North

2018-04-03 Thread Springfield Harrison
OK, thank you. That formula is useful. I assume that "North" for any projection will be grid North so that a line drawn at 0° while using a UTM projection will point to grid North if the drawing is re-projected using an un-projected CRS (where 0° is true North)? I wonder if I have that corr

Re: [Qgis-user] True North

2018-04-03 Thread Daniel Alejandro Montecinos Rubilar
Good Morning, I have a query, I have use Mapinfo for several years and I was discover QGIS program and I want change me, but I’am searching one similar function but I dont found. This function, in Mapinfo, his name is “Update Column”. Below I leave an image I appreciate your help, it

Re: [Qgis-user] True North

2018-04-03 Thread Kirk Schmidt
The central meridian in each utm zone is oriented directly at true north (Easting of 500,000 m).  The difference in angles when you move east of west of the meridian is referred to as convergence and the following link provides 2 formulas for calculating the convergence angles in utm projection

Re: [Qgis-user] True North

2018-04-03 Thread Kristian Evers
true north instead of grid north. /Kristian Fra: Qgis-user [mailto:qgis-user-boun...@lists.osgeo.org] På vegne af Alexandre Neto Sendt: 3. april 2018 11:15 Til: Springfield Harrison Cc: qgis-user Emne: Re: [Qgis-user] True North Maybe something like this : https://gis.stackexchange.com/q

Re: [Qgis-user] True North

2018-04-03 Thread Alexandre Neto
Maybe something like this : https://gis.stackexchange.com/q/115531/6191 Alexandre A ter, 3/04/2018, 10:11, Alexandre Neto escreveu: > Ah sorry, > > I got lost in translation. You are right, I was talking about the magnetic > north, not the geodetic one. > > Meanwhile, remembering that all UTM

Re: [Qgis-user] True North

2018-04-03 Thread Alexandre Neto
Ah sorry, I got lost in translation. You are right, I was talking about the magnetic north, not the geodetic one. Meanwhile, remembering that all UTM are Transverse Mercator, I don't think there's a CRS that will solve you question. I think you need to use some formula to convert the grid north

Re: [Qgis-user] True North

2018-04-03 Thread Springfield Harrison
Alexandre, I believe that true north is actually a constant oriented towards the North Pole, i e 90 degrees north latitude. Also where all meridians converge in the northern hemisphere. The other North orientations are magnetic north and grid North and these do vary as you suggested. I do need t

Re: [Qgis-user] True North

2018-04-02 Thread Alexandre Neto
AFAIK, true bearing differs in time and location because of magnetic declination. So I don't think there is a such thing as a CRS with true bearings. Assuming you are working at regional level, find the magnetic declination for that region and remove it from your observations. Then draw the azimut