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Fun with Emacs Calc
- derleth 14y agoTo use this code in any serious capacity, remember the sign conventions: North latitude and East longitude are both positive, South latitude and West longitude are both negative. It's utterly arbitrary but fairly universal.
- tikhonj 14y agoIf you think about north as up and west as left, then it works out the same as a coordinate plane, so it makes sense.
- quotemstr 14y agoEmacs calc is one of my favorite computer algebra systems: it can derive and sum and integrate, numerically or symbolically. It can do unit conversions, graph equations, and do geometry. It's really very neat and useful.