It's is a great career opportunities.geographers choose to do fieldwork,geographer in cartography is also  examining phenomena such as cultural structures as they relate to geography.

The eligibility is Diploma in Geoinformatics is a two to three years course for 10+2 passed students.
The career in  cartography Good record keeping skill
Critical analytical thinking
Sketching skill
Computer skills
Spatial aptitude
Photography
The roll of geographical cartography is developing process, study , consulation , traning

Become a geological cartographer you have to give entrance exams.

For more information you can visit here
https://www.careers360.com/colleges/mg-science-institute-ahmedabad/diploma-in-geoinformatics-course

https://www.careers360.com/courses/geo-informatics-course

https://www.careers360.com/careers/cartographer

All the best. Thank you. I hope this answer helps you.