Needing help in creating a .prj coordinate system file that is setup for the project/local datum being used.
The coordinates are a modification of the 83/11 Washington State Plane North(M) system with an applied combined factor (divide by 0.997362 for example) with the resulting coordinate shifted by +100000 and then converted to Survey Feet.
I do not inherently understand the formatting of the .prj’s nor how to make the above formula work within it. Ideas?
Alternate formula that I think is equivalent would be 83/11 Washington State Plane North(FT) divided by 0.997362 shifted by 328083.3333