Created
January 17, 2020 11:04
-
-
Save endrebak/e5a649b446604040c978a71b41aab6c5 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
@cython.boundscheck(False) | |
@cython.wraparound(False) | |
@cython.initializedcheck(False) | |
cpdef _getitem(const long [::1] runs, const double [::1] values, const long [::1] run_cumsum, start, end): | |
cdef: | |
int i = 0 | |
int arr_length = 100 | |
int nfound = 0 | |
# int foundsum = 0 | |
int rsum = 0 | |
int r = 0 | |
int l = 0 | |
long search_start = np.searchsorted(run_cumsum, start) | |
int started = 0 | |
cdef double[::1] vs | |
cdef long[::1] rs | |
values_arr = np.ones(arr_length) * -1 | |
vs = values_arr | |
runs_arr = np.ones(arr_length, dtype=np.long) * -1 | |
rs = runs_arr | |
for i in range(search_start, len(runs)): | |
# print("i", i) | |
r = runs[i] | |
# print("r", r) | |
rsum = run_cumsum[i] | |
# print("rsum", rsum) | |
if started == 0: | |
# print("not started") | |
if rsum > start: | |
# print("rsum > start") | |
if not rsum > end: | |
l = rsum - start | |
# this is always the first entry, no need to check size | |
# print("l1", l) | |
rs[nfound] = l | |
# foundsum += l | |
# print("v1", values[i]) | |
vs[nfound] = values[i] | |
nfound += 1 | |
else: | |
return [end - start], [values[i]] | |
started = 1 | |
else: | |
if nfound >= arr_length: | |
arr_length = arr_length * 2 | |
values_arr = np.resize(values_arr, arr_length) | |
runs_arr = np.resize(runs_arr, arr_length) | |
rs = runs_arr | |
vs = values_arr | |
if rsum < end: | |
l = runs[i] | |
# print("l2", l) | |
# print("v2", values[i]) | |
rs[nfound] = l | |
vs[nfound] = values[i] | |
nfound += 1 | |
else: | |
l = runs[i] - (rsum - end) | |
# print("l3", l) | |
if l == 0: | |
break | |
rs[nfound] = l | |
vs[nfound] = values[i] | |
# print("v3", values[i]) | |
nfound += 1 | |
break | |
return runs_arr[:nfound], values_arr[:nfound] | |
@cython.boundscheck(False) | |
@cython.wraparound(False) | |
@cython.initializedcheck(False) | |
cpdef getitems(const long [::1] runs, const double [::1] values, const long [::1] starts, const long [::1] ends): | |
cdef: | |
long i = 0 | |
long counter = 0 | |
long rsum = 0 | |
long start = 0 | |
long end = 0 | |
long old_start = -1 | |
long old_end = -1 | |
cdef long[::1] run_cumsum | |
run_cumsum_arr = np.cumsum(runs) | |
run_cumsum = run_cumsum_arr | |
_runs, _values = [], [] | |
for i in range(len(starts)): | |
__runs, __values = _getitem(runs, values, run_cumsum, starts[i], ends[i]) | |
_runs.append(__runs) | |
_values.append(__values) | |
ls = np.array([len(r) for r in _runs], dtype=int) | |
_runs = np.concatenate(_runs) | |
_values = np.concatenate(_values) | |
_starts = np.repeat(starts, ls) | |
_ends = np.repeat(ends, ls) | |
df = pd.DataFrame({"Start": _starts, "End": _ends, "Run": _runs, "Value": _values}) | |
return df |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment