8000 Add map_variables and -99999 nan value to read_crn by AdamRJensen · Pull Request #1368 · pvlib/pvlib-python · GitHub
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Add map_variables and -99999 nan value to read_crn #1368

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Merged
merged 21 commits into from
Feb 17, 2022
Merged

Add map_variables and -99999 nan value to read_crn #1368

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9f8e256
Add map_variables argument to read_crn
AdamRJensen Jan 5, 2022
a10fe28
Add test coverage for map_variables
AdamRJensen Jan 6, 2022
456cb71
Update whatsnew
AdamRJensen Jan 7, 2022
6bc6950
Remove unnecessary tz_localize
AdamRJensen Jan 7, 2022
106030a
Replace nans with .replace instead of .where
AdamRJensen Jan 7, 2022
1fcaa97
Extend documentation
AdamRJensen Jan 7, 2022
02fbfbb
Simply test coverage of map_variables
AdamRJensen Jan 7, 2022
427fa38
Use assert_index_equal instead of assert
AdamRJensen Jan 7, 2022
ebe5510
Add import of assert_index_equal
AdamRJensen Jan 7, 2022
a409915
Add -99999 and -999999 to nan values
AdamRJensen Jan 7, 2022
81ead2d
Add -99999 nan bug to whatsnew
AdamRJensen Jan 8, 2022
ee56796
Add -99999 to test file
AdamRJensen Jan 10, 2022
b041b8e
Update doc and whatsnew
AdamRJensen Jan 10, 2022
a753377
Remove -999999 from list of nans
AdamRJensen Jan 10, 2022
485e2a9
Merge branch 'master' into patch-2 8000
AdamRJensen Jan 10, 2022
a66f71d
Minor doc update
AdamRJensen Jan 11, 2022
457fd5b
Add dictionary of nan values
AdamRJensen Jan 12, 2022
999738b
Change CRN_VARIABLE_MAP back to VARIABLE_MAP
AdamRJensen Jan 12, 2022
667f243
Remove numpy import
AdamRJensen Jan 12, 2022
a07acbc
Reformat setting of dtypes
AdamRJensen Jan 12, 2022
538fd75
Merge branch 'master' into patch-2
AdamRJensen Feb 16, 2022
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Extend documentation
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@AdamRJensen
AdamRJensen committed Jan 7, 2022
commit 1fcaa9773cb3e63f8874d6771ab9194b6edaeec2
16 changes: 10 additions & 6 deletions pvlib/iotools/crn.py
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Expand Up @@ -41,9 +41,13 @@


def read_crn(filename, map_variables=True):
"""
Read a NOAA USCRN fixed-width file into pandas dataframe. The CRN is
described in [1]_ and [2]_.
"""Read a NOAA USCRN fixed-width file into a pandas dataframe.

The CRN network consists of a +100 meteorological stations covering the
U.S. and is described in [1]_ and [2]_. The primary goal of CRN is to
provide long-term measurements of temperature, precipitation, and soil
moisture and temperature. Additionally, global horizontal irradiance (GHI)
is measured using a photodiode pyranometer.

Parameters
----------
Expand All @@ -63,10 +67,10 @@ def read_crn(filename, map_variables=True):
-----
CRN files contain 5 minute averages labeled by the interval ending
time. Here, missing data is flagged as NaN, rather than the lowest
possible integer for a field (e.g. -999 or -99). Air temperature in
deg C. Wind speed in m/s at a height of 1.5 m above ground level.
possible integer for a field (e.g. -999 or -99). Air temperature is in
deg C and wind speed is in m/s at a height of 1.5 m above ground level.

Variables corresponding to standard pvlib variables are renamed,
Variables corresponding to standard pvlib variables are by default renamed,
e.g. `SOLAR_RADIATION` becomes `ghi`. See the
`pvlib.iotools.crn.VARIABLE_MAP` dict for the complete mapping.

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