So Mr Mercator didn’t solve how to travel on Great Circle lines? How do we describe the navigation today? Do Great Circle lines even have a definition, e.g. from point to point?

I think you forgot to mention that the central meridian in each zone is always set to 500 000 east. That means that as you get closer to the zones, the actual width of each zone decreases, so you can include a quite large area of the neighbouring zone to the west without encountering negative easting coordinates.

Sir, unsaon pag input sa calculator kanang sa cosine law? Salamat!

Good teachers❤❤❤❤

Don Boyes

Thank you for making a perfect video about it

Attendance

So if I dig a straight hole through the spherical earth and throw a metallic ball into it, can you describe what will happen to that ball? Would it stop and be floating at the center because gravity is pulling it downward at opposite sides of the earth OR would the ball be going up and down up and down non stop?

Remove the background music. What a stupid work

Thank you for sharing Sir

Very good explanation!

You are a legend 🥹

Thank you sir but music is so annoying

Comments for consideration. The easy part first. To @solomononuchefaruna5022, who asked about the Rx, Ry, Rz values when transformation between NAD 27 (North American Datum of 1927) and NAD 83 (North American Datum of 1983). As author Gagula noted very well old horizontal datums are purely two dimension so a three dimension transformation is really not reliable. In addition as the author showed older local datums are comprised of networks that are not exactly consistent (e.g. different orders of accuracy 1st, 2nd, 3rd). meaning there are different levels of spatial accuracy in each coordinate. This must be considered for any transformation. Both NAD 27 and the original definition of NAD 83 were both 2D. Consequently, the national transformation between is a gridded solution across the country rather than a 3D or 7D approach. The official transformation can be found in the National Geodetic Survey’s (NGS) NCAT (National Conversion and Transformation tool) -- geodesy.noaa.gov/NCAT/. There are four publications that describe how this tool has evolved by NGS -- geodesy.noaa.gov/library/, in the search box type NADCON and all are shown. In general, the uncertainty between NAD 27 and the original solution of NAD 83 completed in 1986 is 0.15 m (1 sigma). Very important to note that NAD 83 has evolved with the introduction of GPS beginning in 1989 and the user must now be aware of which area of the country they are working in and what are the requirements for the uncertainty of any transformation the most current is NAD 83 (2011). It is vitally important in our current world of high accuracy expectations that we fully understand the foundations for national and international coordinate frames. Now that we are multi-constellational (not just GPS) WGS 84 should not be considered as a reference since the other three constellations are all defined in their own system such as the Russian GLONASS which uses PZ90.11. All the constellations are closed aligned to some realization of the International Terrestrial Reference Frame (ITRF) Now on to WGS 84. A small error, the reference system was originally defined by the Defense Mapping Agency (DMA) in 1987 and published in DMA Technical Report 8350.2 “World Geodetic System 1984 Its Definition and Relationships to Local Geodetic Systems”. DMA became NIMA in 1996 and is the National Geospatial-Intelligence Agency (NGA). The most current link to the WGS publication is --file:///C:/Users/User/Desktop/WGS%2084%20-%20NGA.pdf. Regrettably the author does not indicate how the government of the Philippines defined high accuracy (>3 cm) in the WGS 84 datum. The U.S. Defense Department NGA does not provide access to any ground control framework such as Continuously Operating Reference Stations (CORS) with accurate WGS 84 coordinates for anyone outside of the U.S. Defense Department community. Additionally, the datum for WGS 84 changed seven times as outlined in the linked NGA report to be closely aligned with the ITRF. The most current realization is called WGS 84 (G2139) released in January ’21 aligned to ITRF14. I suspect that the Philippines Active Network (PageNet) was most likely constrained to regional CORS that are published as part of the International GNSS Service (IGS) -- igs.org/ for which all coordinates are provided in ITRF

This is absolutely fantastic.

On this give me example

Who is this guy? This explanation made it click for me

verry helpfull thanks

one of the best UTM explanations on YT so far

Salamat sir more vids pa po

❤

Thank u for your comprehensive tutorial. Could u please provide steps on how we can solve the Bursa Wolf 7 parameter transformation model for the transformation parameters by Least squares

Good day sir. Can i ask question sir. If CE graduate then gustong mag enroll ng GE ilanh years na lng po sir?

I appreciate your knowledge. You are the real teacher whose students get true light about subject . Thank once again

Good day Engr. Meron kaba discussion about geodesy surveying sana mapansin thank you

Merci beaucoup pour votre excellente explication

Thank you sir.. i got it

May I ask you some questions?

Hello sir can I contact you? I have some questions about the zone.

this is very concise and understandable.

good explanation

Thank you very much :)

Very much Appreciated Mate 👍 thanks for your Videos

Taking a GIS course and really needed a video like this! Thanks!!

Thank you so much, I have inquiry, Kindly do a video on how to get the scale factor, translation and rotation parameters given both local and global coordinates in Bursa wolf model.

Good

thank you I was really confused before watching I understood everything , great way of explaining

How can I get this presentation? 🙏

Upload para sir mag major subject GE. amping!!

Sir. Can I have a copy of your presentation? I am a graduating GE student from Bicol University. Thank you so much if will be given chance

Excellent explanation!

Credit for this video should go to Professor Don Boyes an online teacher on Coursera, the man behind that presentation.

good job brother

Thank you sir, Very Informative

Sir pwedi pa tutor? 🥺 5pm - 9pm everyday, I'll wait for your response sir ☺️

Hello sir meron kayung video about mine surveying? Ty

Some thing is complicated a little bit, because you said in 04:29 that curved line it's not a straight line, but for me it is the straight line in reality, because it doesn't matter if my track was a straight line and i made some zigzag following the way points right and lift, but my track from London to New York departure bearing 288° remains straight in reality, and the curved line doesn't exist

You really explained a complicated thing very simply. 👍

sir what will be the vcalue of Rx, RY, Rz when axes of two datum are parallel while doing datum transformation form NAD27 to NAD83

how did you do it can you share with me , thank you