Understanding Heights and Vertical Datums

Understanding Heights and Vertical Datums
alwardi 2018-01-13 21:04:45

GPSman 2017-12-19 22:27:49

As an entity identified with surveying, a poll such as this one should not be called a "survey".
w.wefel 2017-12-09 22:51:15

Good comprehensive overview of height systems. The mystery of the St. Lawrence River flowing uphill is explained!
durces 2017-11-22 10:11:42

Thank you
SanAntone 2017-10-04 12:21:18

This lesson on understanding heights and vertical datums is helpful for a broad overview of the subject, however, it might require more than once going through it to fully absorb all the material. I wish there were more examples of what the various datum systems describe since it's not so easy to see what the differences are. Also, the 18th century controversy between Newton and Cassini does not explain what methods they used to settle the question, but perhaps that is beyond the scope of this lesson.
oladotunonas 2017-10-03 10:07:44

The study is good and has the capacity to increase the knowledge of students. The lesson materials are also fixable Nad easy to understand.
vipin kumar maurya 2017-10-03 04:07:54

Very good material for concept clearance and pracice
kevin_morris@nps.gov 2017-09-27 12:55:02

Enjoyed the lesson.
dobnc60@gmail.com 2017-09-26 09:00:46

I am a licensed Land Surveyor and this type of online training is very helpful to maintaining my understanding of issues related to my profession.
JonathanPrice 2017-09-21 06:28:02

Lesson may be easier to follow if more animated video explanations are done.
dmelton 2017-09-11 19:49:44

A very good introduction to the subject of datum and the difference between an ellipsoid and a geoid.
elsy-ngalaha 2017-09-10 21:10:56

bushasarrived 2017-08-22 18:34:19

Gives a good general understanding of vertical datums and the principals behind them
rrustan 2017-06-30 13:37:25

MCDitches 2017-06-23 14:17:50

This course gave me a much better understanding of heights and vertical datums.
rmorrison 2017-06-23 12:56:16

alexosfera 2017-06-02 05:30:57

I'm sure you could not imagine it!
matthewjohnson 2017-04-26 14:36:35

jfabian 2017-04-12 07:13:58

Great overview of the intricacies involved with determining "height".
jendowe 2017-02-27 14:23:53

Very informative!
kkoeck 2017-02-26 21:25:38

A very good introduction for understanding heights and vertical datums.
joeh 2017-02-06 07:22:30

I would like to see more examples in understanding the heights and vertical datums.
jajuarez 2016-10-31 18:21:21

Nice course, for learn about heights and vertical datums
PROCSEN 2016-09-25 08:07:18

I would strongly recommend this course for all GIS oriented students. It is very good opportunity to learn new skills.
pic2 2016-09-20 16:53:10

I really appreciate the training regiments, and the opportunities to be able to utilize them, they are really great tools, and well defined educational proprieties.
ecliptico 2015-04-17 10:45:23

I liked a lot!!! thanks NGS
rolando.flores 2015-04-15 11:29:02

Great learning module, Thanks NGS and others who help put this together.
jay.satalich@sbcglobal.net 2015-04-08 21:30:57

Great overview, kudos to NGS for helping to create this.