Re: [Qgis-user] Labeling Lines with Bearings
Hi Kirk, Yes, that worked well. I added the code from the processing toolbox and it worked fine. Very helpful, thanks very much . . . . Cheers, Spring On 10/Feb/2022 05:09, Kirk Schmidt wrote: Hi Springfield: You can place the python code in the C:\Users\User\AppData\Roaming\QGIS\QGIS3\profiles\default\processing\scripts folder on your local machine and then it will show up under scripts in the processing toolbox. Kirk Schmidt On 2/10/2022 4:03 AM, Springfield Harrison wrote: Hello Everyone, Thanks very much for the suggestions. The main_angle option seem to do the trick. I didn't try the Python code. Not familiar with that side of things although it is probably simple enough. Could not find the recipe for adding it to the plug-in list, which I presume is where it is supposed to go. Thanks again, very helpful… Cheers, Spring On 04/Feb/2022 07:10, Kirk Schmidt wrote: Hi Springfield: Sure it would , I have attached my little convergence tool. Just create a point in the area where you want to know the convergence at let her rip. The vary last column is the convergence in minutes. So, depending on what side of the central meridian of your coordinate system you are, it will either be negative or positive. SO, I just used it yesterday for and area that is east of the meridian, UTM easting > 500,000, therefore the resulting convergence was 22 minutes, which need to be subtracted from the grid north value to obtain true north. It is not a sophisticated workflow, but I only require it intermittently. I usually use NRCAN magnetic declination calculator (online) to verify the magnetic declination for the day. But it seems to be offline. I convert everything to magnetic for field work and then there are no mistakes due to declination calculations and settings. Have fun Kirk On 2/4/2022 6:34 AM, Springfield Harrison wrote: Aha, thanks Kirk. That's why my lines are not as I intended. This probably affects making the lines with the Shape Tool. Yes, it seems to draw in grid north, angle_main reports in True DD. The map is 26907, UTM 7N. I calculated the difference between as drawn and as reported and used that to change the input figure. It works OK, not exact as the convergence varies with longitude, I believe. Thanks Kirk . . . . Cheers, Spring On 03/Feb/2022 02:59, kirk wrote: Sent from my Galaxy Original message From: kirk Date: 2022-02-03 5:55 a.m. (GMT-04:00) To: Springfield Harrison , qgis-user@lists.osgeo.org Subject: RE: [Qgis-user] Labeling Lines with Bearings Hi Spingfield. I use a little routine and the core if it is: main_angle($geometry) which you can use in field calculator. Note this will give you the azimuth in relation to grid north for the coordinate system you are using. For projections, you will need to lookup or calculate convergence to get the adjustment to true north. Kirk Schmidt Sent from my Galaxy Original message From: Springfield Harrison Date: 2022-02-02 7:30 p.m. (GMT-04:00) To: qgis-user@lists.osgeo.org Subject: [Qgis-user] Labeling Lines with Bearings Hello, I need to put the line direction (azimuth) into a line label. Some searching has not come up with anything. Is there a way? Thanks very much . . . . Cheers, Spring ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info:https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe:https://lists.osgeo.org/mailman/listinfo/qgis-user -- Kirk Schmidt, MScF, BScF, RPF General Manager Nortek Resource Solutions Inc. 26 Church Road Sutherlands River, NS B0K 1W0 Tel (902) 922.3607 Email:k...@nortekresources.com Web:www.nortekresources.com -- Kirk Schmidt, MScF, BScF, RPF General Manager Nortek Resource Solutions Inc. 26 Church Road Sutherlands River, NS B0K 1W0 Tel (902) 922.3607 Email:k...@nortekresources.com Web:www.nortekresources.com ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Labeling Lines with Bearings
Hi Springfield: You can place the python code in the C:\Users\User\AppData\Roaming\QGIS\QGIS3\profiles\default\processing\scripts folder on your local machine and then it will show up under scripts in the processing toolbox. Kirk Schmidt On 2/10/2022 4:03 AM, Springfield Harrison wrote: Hello Everyone, Thanks very much for the suggestions. The main_angle option seem to do the trick. I didn't try the Python code. Not familiar with that side of things although it is probably simple enough. Could not find the recipe for adding it to the plug-in list, which I presume is where it is supposed to go. Thanks again, very helpful… Cheers, Spring On 04/Feb/2022 07:10, Kirk Schmidt wrote: Hi Springfield: Sure it would , I have attached my little convergence tool. Just create a point in the area where you want to know the convergence at let her rip. The vary last column is the convergence in minutes. So, depending on what side of the central meridian of your coordinate system you are, it will either be negative or positive. SO, I just used it yesterday for and area that is east of the meridian, UTM easting > 500,000, therefore the resulting convergence was 22 minutes, which need to be subtracted from the grid north value to obtain true north. It is not a sophisticated workflow, but I only require it intermittently. I usually use NRCAN magnetic declination calculator (online) to verify the magnetic declination for the day. But it seems to be offline. I convert everything to magnetic for field work and then there are no mistakes due to declination calculations and settings. Have fun Kirk On 2/4/2022 6:34 AM, Springfield Harrison wrote: Aha, thanks Kirk. That's why my lines are not as I intended. This probably affects making the lines with the Shape Tool. Yes, it seems to draw in grid north, angle_main reports in True DD. The map is 26907, UTM 7N. I calculated the difference between as drawn and as reported and used that to change the input figure. It works OK, not exact as the convergence varies with longitude, I believe. Thanks Kirk . . . . Cheers, Spring On 03/Feb/2022 02:59, kirk wrote: Sent from my Galaxy Original message From: kirk Date: 2022-02-03 5:55 a.m. (GMT-04:00) To: Springfield Harrison , qgis-user@lists.osgeo.org Subject: RE: [Qgis-user] Labeling Lines with Bearings Hi Spingfield. I use a little routine and the core if it is: main_angle($geometry) which you can use in field calculator. Note this will give you the azimuth in relation to grid north for the coordinate system you are using. For projections, you will need to lookup or calculate convergence to get the adjustment to true north. Kirk Schmidt Sent from my Galaxy Original message From: Springfield Harrison Date: 2022-02-02 7:30 p.m. (GMT-04:00) To: qgis-user@lists.osgeo.org Subject: [Qgis-user] Labeling Lines with Bearings Hello, I need to put the line direction (azimuth) into a line label. Some searching has not come up with anything. Is there a way? Thanks very much . . . . Cheers, Spring ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info:https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe:https://lists.osgeo.org/mailman/listinfo/qgis-user -- Kirk Schmidt, MScF, BScF, RPF General Manager Nortek Resource Solutions Inc. 26 Church Road Sutherlands River, NS B0K 1W0 Tel (902) 922.3607 Email:k...@nortekresources.com Web:www.nortekresources.com -- Kirk Schmidt, MScF, BScF, RPF General Manager Nortek Resource Solutions Inc. 26 Church Road Sutherlands River, NS B0K 1W0 Tel (902) 922.3607 Email:k...@nortekresources.com Web:www.nortekresources.com ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Labeling Lines with Bearings
Hello Everyone, Thanks very much for the suggestions. The main_angle option seem to do the trick. I didn't try the Python code. Not familiar with that side of things although it is probably simple enough. Could not find the recipe for adding it to the plug-in list, which I presume is where it is supposed to go. Thanks again, very helpful… Cheers, Spring On 04/Feb/2022 07:10, Kirk Schmidt wrote: Hi Springfield: Sure it would , I have attached my little convergence tool. Just create a point in the area where you want to know the convergence at let her rip. The vary last column is the convergence in minutes. So, depending on what side of the central meridian of your coordinate system you are, it will either be negative or positive. SO, I just used it yesterday for and area that is east of the meridian, UTM easting > 500,000, therefore the resulting convergence was 22 minutes, which need to be subtracted from the grid north value to obtain true north. It is not a sophisticated workflow, but I only require it intermittently. I usually use NRCAN magnetic declination calculator (online) to verify the magnetic declination for the day. But it seems to be offline. I convert everything to magnetic for field work and then there are no mistakes due to declination calculations and settings. Have fun Kirk On 2/4/2022 6:34 AM, Springfield Harrison wrote: Aha, thanks Kirk. That's why my lines are not as I intended. This probably affects making the lines with the Shape Tool. Yes, it seems to draw in grid north, angle_main reports in True DD. The map is 26907, UTM 7N. I calculated the difference between as drawn and as reported and used that to change the input figure. It works OK, not exact as the convergence varies with longitude, I believe. Thanks Kirk . . . . Cheers, Spring On 03/Feb/2022 02:59, kirk wrote: Sent from my Galaxy Original message From: kirk Date: 2022-02-03 5:55 a.m. (GMT-04:00) To: Springfield Harrison , qgis-user@lists.osgeo.org Subject: RE: [Qgis-user] Labeling Lines with Bearings Hi Spingfield. I use a little routine and the core if it is: main_angle($geometry) which you can use in field calculator. Note this will give you the azimuth in relation to grid north for the coordinate system you are using. For projections, you will need to lookup or calculate convergence to get the adjustment to true north. Kirk Schmidt Sent from my Galaxy Original message From: Springfield Harrison Date: 2022-02-02 7:30 p.m. (GMT-04:00) To: qgis-user@lists.osgeo.org Subject: [Qgis-user] Labeling Lines with Bearings Hello, I need to put the line direction (azimuth) into a line label. Some searching has not come up with anything. Is there a way? Thanks very much . . . . Cheers, Spring ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info:https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe:https://lists.osgeo.org/mailman/listinfo/qgis-user -- Kirk Schmidt, MScF, BScF, RPF General Manager Nortek Resource Solutions Inc. 26 Church Road Sutherlands River, NS B0K 1W0 Tel (902) 922.3607 Email:k...@nortekresources.com Web:www.nortekresources.com ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Labeling Lines with Bearings
With the Shape Tools measurement layer, there is an option that you can check to retain the original attribute information and copy it to the output file, but it looks like you have a solution that you like. There are usually multiple ways to solve a problem. Best of luck, Calvin On Thu, Feb 3, 2022 at 3:37 AM Springfield Harrison wrote: > Hello Phil & Calvin, > > Thanks very much to you both for those tips. > > The Vector Shake Tools options were good but required some extra work to > transfer the new information to the existing layer. I think I could have > made it work but then found one of the options in Stack Exchange to be > exactly what was needed. > > This is it: > > "And now it is even easier than Kay's answer -first use 'explode lines' > tool, yielding all line segments, then calculate azimuth with field > calculator: *main_angle($geometry)*". > > This is brilliant, it can be used to populate an attribute field in the > table or directly in a label formula as desired. Exactly the solution I > was looking for! > > Thanks very much to you both, this is a great resource… > > > Cheers, Spring > > > > On 02/Feb/2022 16:58, Phil Wyatt wrote: > > Hi Spring, > > Bottom couple of posts in this stackexchange question should get you started > https://gis.stackexchange.com/questions/55449/how-do-i-find-vector-line-bearing-in-qgis-or-grass > > Cheers - Phil > > -Original Message- > From: Qgis-user > On Behalf Of Springfield Harrison > Sent: Thursday, 3 February 2022 10:30 AM > To: qgis-user@lists.osgeo.org > Subject: [Qgis-user] Labeling Lines with Bearings > > Hello, > > I need to put the line direction (azimuth) into a line label. Some searching > has not come up with anything. > > Is there a way? Thanks very much . . . . > > > Cheers, Spring > > > > ___ > Qgis-user mailing listqgis-u...@lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user > > ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Labeling Lines with Bearings
Hi Spingfield.I use a little routine and the core if it is:main_angle($geometry) which you can use in field calculator.Note this will give you the azimuth in relation to grid north for the coordinate system you are using. For projections, you will need to lookup or calculate convergence to get the adjustment to true north. Kirk SchmidtSent from my Galaxy Original message From: Springfield Harrison Date: 2022-02-02 7:30 p.m. (GMT-04:00) To: qgis-user@lists.osgeo.org Subject: [Qgis-user] Labeling Lines with Bearings Hello,I need to put the line direction (azimuth) into a line label. Some searching has not come up with anything.Is there a way? Thanks very much . . . .Cheers, Spring___Qgis-user mailing listQgis-user@lists.osgeo.orgList info: https://lists.osgeo.org/mailman/listinfo/qgis-userUnsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Labeling Lines with Bearings
Hello Phil & Calvin, Thanks very much to you both for those tips. The Vector Shake Tools options were good but required some extra work to transfer the new information to the existing layer. I think I could have made it work but then found one of the options in Stack Exchange to be exactly what was needed. This is it: "And now it is even easier than Kay's answer -first use 'explode lines' tool, yielding all line segments, then calculate azimuth with field calculator: *main_angle($geometry)*". This is brilliant, it can be used to populate an attribute field in the table or directly in a label formula as desired. Exactly the solution I was looking for! Thanks very much to you both, this is a great resource… Cheers, Spring On 02/Feb/2022 16:58, Phil Wyatt wrote: Hi Spring, Bottom couple of posts in this stackexchange question should get you started https://gis.stackexchange.com/questions/55449/how-do-i-find-vector-line-bearing-in-qgis-or-grass Cheers - Phil -Original Message- From: Qgis-user On Behalf Of Springfield Harrison Sent: Thursday, 3 February 2022 10:30 AM To: qgis-user@lists.osgeo.org Subject: [Qgis-user] Labeling Lines with Bearings Hello, I need to put the line direction (azimuth) into a line label. Some searching has not come up with anything. Is there a way? Thanks very much . . . . Cheers, Spring ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Labeling Lines with Bearings
Hi Spring, The Shape Tools plugin has several tools for doing this. Once it is installed here are the options. 1) If you already have a line layer you can run the following from the QGIS menu "Vector->Shape Tools->Geodesic measurement layer". Deselect "Measure total length rather than each line segment" and when you run the algorithm it will give you a table that has the bearing from the first point to the second point. It automatically labels it with the distance, but you can click in properties and change it to the heading_to attribute which is your azimuth. 2) The second method is to use the "Vector->Shape Tools->Geodesic measure tool". This is a measurement tool like the QGIS measurement tool, but it also includes "Heading To" and "Heading From". If you click on the "Save to Layer" button, it saves this to a measurement layer with the azimuths and distances in the attributes. I probably should provide an option for the user to select what automatic labeling displays. Right now it is just the distance, but I could also allow for azimuth. I hope that helps. Calvin On Wed, Feb 2, 2022 at 6:30 PM Springfield Harrison wrote: > Hello, > > I need to put the line direction (azimuth) into a line label. Some > searching has not come up with anything. > > Is there a way? Thanks very much . . . . > > > Cheers, Spring > > > > ___ > Qgis-user mailing list > Qgis-user@lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user > ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Labeling Lines with Bearings
Hi Spring, Bottom couple of posts in this stackexchange question should get you started https://gis.stackexchange.com/questions/55449/how-do-i-find-vector-line-bearing-in-qgis-or-grass Cheers - Phil -Original Message- From: Qgis-user On Behalf Of Springfield Harrison Sent: Thursday, 3 February 2022 10:30 AM To: qgis-user@lists.osgeo.org Subject: [Qgis-user] Labeling Lines with Bearings Hello, I need to put the line direction (azimuth) into a line label. Some searching has not come up with anything. Is there a way? Thanks very much . . . . Cheers, Spring ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
