Zitat von Mark E Tringham im Beitrag #1
I have been loading cave survey data and merging data sets by copying and pasting into a \'master cave\' file as recommended on forum. But what happens to data declination value when you copy and paste it? Is it now using the receiving file declination or is the old declination preserved?
The Mag Dec and Mag Var at various times and/or locations can be defined in File > "Instruments". You give each "Instruments" a unique ID. Then in your data table(s), each line can be set with a different instrument ID. To make it work as expected you also need to fill the date field as well in the data table.
I don't have an exploration area big enough to get significant Mag Dec differences at the cave entrances of my networks and Mag Var is stable enough over a year. So I set one "Instrument" per year (i.e. 01.01.YYYY) and let the mag var and data line date deal with the calculation. But if you have some caves far appart to get significant Mag Dec at the entrances, you can set different "Instruments" for the same year but for different locations.
I import raw data (not processed with mag dec) from TopoDroid - Can't say much about Pocket Topo as I never used it. As soon as the new data set is imported in CRP, all the new data lines are highlighted, so I use the value/replace feature to set Instrument (ID), Date, Surveyor (ID).
Hope this help.
CaveRenderPro » Foren Suche nach Inhalten von Droniste
13.11.2023 20:26
