new map (for me). warm and sunny.
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Better than last week! 35./90.
A big error on #1 and a smaller one on #2.
Not so great on #2, probably searched for it too high up the hill and also too much south. After the shock on #2 also some problems with direction towards #3.
A new release of AllanTools is now available on PyPi.
A loop around the Sipoonkorpi National Park. Warm +26 C or so at the start. Around 67 km in total. Almost the same route as in June 2017.
The AllanTools functions mtotdev() and htotdev() are now almost 10-times faster, after an update to the code that more efficiently calculates moving averages.
The old code used numpy.mean() for each iteration of a loop:
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for j in range(0, 6*m): # summation of the 6m terms. xmean1 = np.mean(xstar[j : j+m]) xmean2 = np.mean(xstar[j+m : j+2*m]) xmean3 = np.mean(xstar[j+2*m : j+3*m]) |
However this can be computed much faster by noticing that the new mean differs from the old (already computed!) mean by just two points, one at the start is dropped, and a new one at the end is added:
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for j in range(0, 6*m): # summation of the 6m terms. if j == 0: # intialize the sum xmean1 = np.sum( xstar[0:m] ) xmean2 = np.sum( xstar[m:2*m] ) xmean3 = np.sum( xstar[2*m:3*m] ) else: # j>=1, subtract old point, add new point xmean1 = xmean1 - xstar[j-1] + xstar[j+m-1] # xmean2 = xmean2 - xstar[m+j-1] + xstar[j+2*m-1] # xmean3 = xmean3 - xstar[2*m+j-1] + xstar[j+3*m-1] # |
No major mistakes but slow going on the 2nd stage of Jukola this year.
The not-so-dramatic errors were: #2 has a 90-degree wiggle just before the control - my route to #7 was OK but very slow through the green/tick aprts - then no worries until #15 where the 'safe' choice along the road was no good at all - finally a bit of a Z-bend into #17.
We started trapping in this 2nd-generation VTT MIKES ion trap in early May and we are now working with characterizing the trap and laser cooling. Hopefully the ion stays in the trap for several days!
Hot weather +27C maybe and not much wind.
A bit of a loop around #2 - otherwise fairly steady going.
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