Hey Niky,
You can figure out the coordinate system of a shapefile using the shapeinfo function!
sInfo= shapeinfo('bayarea_general.shp');
sInfo.CoordinateReferenceSystem
For more information on shapeinfo function you can checkout the following documentation.
https://in.mathworks.com/help/map/ref/shapeinfo.html
In order to convert the shapefile and your lat, long data in the same format, you can read the shapefile using the readgeotable function (which copies your shapefile into a MATLAB structure variable).
saveGeoTable = readgeotable('bayarea_general.shp');
For more information on readgeotable function you can checkout the following documentation.
https://in.mathworks.com/help/map/ref/readgeotable.html
If your lat, long are stored in a csv file, you can read a csv file using readtable function (which copies your csv file into a MATLAB structure variable).
saveTable = readtable("lat_long.csv")
For more information on readtable function you can checkout the following documentation.
https://in.mathworks.com/help/matlab/ref/readtable.html?searchHighlight=readtable&s_tid=srchtitle_readtable_1
This is one of the ways in which you can have these 2 types of data in the same format.
Thanks and regards,
Harsh Mahalwar
