Created
January 21, 2015 03:02
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Geocomputing - Lab 4
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| import os | |
| #The only thing new about this program is the fact that instead of calling getvar directly, | |
| #the function cuantos is called. cuantos() prompts the user for the number of conversions | |
| #they would like to make and utilizes a while loop that adds 1 to the count variable 'a'. | |
| #Once this variable is equal to the repetititon number (rep), the program exits the while | |
| #loop. In case of failure, the entire cuantos() function is within a while loop, which is | |
| #by default True. This means that it will loop itself infinitely if no break is encountered. | |
| #A break is only encountered in the event of the successful run of getvar for the number of | |
| #iterations specified by rep, so any failure would be greeted with an error prompt and restart. | |
| def cuantos(): | |
| while True: | |
| rep=raw_input('How many conversions would you like to make? ') | |
| a=0 | |
| try: | |
| while a<rep: | |
| getvar() | |
| a+=1 | |
| break | |
| except: | |
| print 'You need to enter a number, try again.' | |
| def getvar(): | |
| while True: | |
| var = raw_input(''' | |
| ---------------------------------------------------------- | |
| Please use format 'XX, XX, XX, X' to describe the latitude | |
| or longitude, in degrees, minutes, seconds, and | |
| hemisphere. Alternatively, you may enter a coordinate in | |
| decimal degrees, using format 'XX.XXXXXXX, X', indicating | |
| first the degree and then the hemisphere, N, S, E or W. | |
| Be aware that you must follow these protocols for the | |
| program to function as you desire it to, and that numbers | |
| will be treated as positive regardless of sign: ''') | |
| var=var.replace(" ","") | |
| print var | |
| try: | |
| DMS=var.split(',') | |
| if DMS[0].find('.'): | |
| DMS[0],DMS[1],DMS[2]=abs(float(DMS[0])), abs(float(DMS[1])), abs(float(DMS[2])) | |
| DMS [3] = DMS[3].lower() | |
| DMS=tuple(DMS) | |
| todd(DMS) | |
| break | |
| except: | |
| try: | |
| DD=var.split(',') | |
| DD[0]=abs(float(DD[0])) | |
| DD[1]=DD[1].lower() | |
| toddums(DD) | |
| break | |
| except: | |
| print 'Failure! Read the instructions, try again.' | |
| def todd(A): | |
| DD=A[0]+A[1]/60+A[2]/3600 | |
| if A [3]=='s' or A [3]=='e': | |
| print "Your DMS measurement is shown, converted into decimal degrees: -"+str(DD) | |
| elif A [3]=='n' or A [3]=='w': | |
| print "Your DMS measurement is shown, converted into decimal degrees:", DD | |
| else: | |
| print "Failure to test, try again" | |
| getvar() | |
| def toddums(B): | |
| D=int(B[0]) | |
| Md=((B[0]-D)*60) | |
| M=int(Md) | |
| S=round((Md-M)*60) | |
| if B [1]=='s': | |
| print "Your DD measurement is shown as",D,'degrees,',M,'minutes and\n',S,'seconds in the Southern hemisphere.' | |
| elif B [1]=='e': | |
| print "Your DD measurement is shown as",D,'degrees,',M,'minutes and\n',S,'seconds in the Eastern hemisphere.' | |
| elif B [1]=='n': | |
| print "Your DD measurement is shown as",D,'degrees,',M,'minutes and\n',S,'seconds in the Northern hemisphere.' | |
| elif B [1]=='w': | |
| print "Your DD measurement is shown as",D,'degrees,',M,'minutes and\n',S,'seconds in the Western hemisphere.' | |
| else: | |
| print "Does not compute, try again" | |
| getvar() | |
| cuantos() |
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