LSST Applications  21.0.0-172-gfb10e10a+18fedfabac,22.0.0+297cba6710,22.0.0+80564b0ff1,22.0.0+8d77f4f51a,22.0.0+a28f4c53b1,22.0.0+dcf3732eb2,22.0.1-1-g7d6de66+2a20fdde0d,22.0.1-1-g8e32f31+297cba6710,22.0.1-1-geca5380+7fa3b7d9b6,22.0.1-12-g44dc1dc+2a20fdde0d,22.0.1-15-g6a90155+515f58c32b,22.0.1-16-g9282f48+790f5f2caa,22.0.1-2-g92698f7+dcf3732eb2,22.0.1-2-ga9b0f51+7fa3b7d9b6,22.0.1-2-gd1925c9+bf4f0e694f,22.0.1-24-g1ad7a390+a9625a72a8,22.0.1-25-g5bf6245+3ad8ecd50b,22.0.1-25-gb120d7b+8b5510f75f,22.0.1-27-g97737f7+2a20fdde0d,22.0.1-32-gf62ce7b1+aa4237961e,22.0.1-4-g0b3f228+2a20fdde0d,22.0.1-4-g243d05b+871c1b8305,22.0.1-4-g3a563be+32dcf1063f,22.0.1-4-g44f2e3d+9e4ab0f4fa,22.0.1-42-gca6935d93+ba5e5ca3eb,22.0.1-5-g15c806e+85460ae5f3,22.0.1-5-g58711c4+611d128589,22.0.1-5-g75bb458+99c117b92f,22.0.1-6-g1c63a23+7fa3b7d9b6,22.0.1-6-g50866e6+84ff5a128b,22.0.1-6-g8d3140d+720564cf76,22.0.1-6-gd805d02+cc5644f571,22.0.1-8-ge5750ce+85460ae5f3,master-g6e05de7fdc+babf819c66,master-g99da0e417a+8d77f4f51a,w.2021.48
LSST Data Management Base Package
Weather.cc
Go to the documentation of this file.
1 // -*- lsst-c++ -*-
2 
3 /*
4  * LSST Data Management System
5  * Copyright 2016 LSST Corporation.
6  *
7  * This product includes software developed by the
8  * LSST Project (http://www.lsst.org/).
9  *
10  * This program is free software: you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation, either version 3 of the License, or
13  * (at your option) any later version.
14  *
15  * This program is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18  * GNU General Public License for more details.
19  *
20  * You should have received a copy of the LSST License Statement and
21  * the GNU General Public License along with this program. If not,
22  * see <http://www.lsstcorp.org/LegalNotices/>.
23  */
24 
25 #include <cmath>
26 #include <sstream>
27 
28 #include "lsst/utils/hashCombine.h"
29 #include "lsst/pex/exceptions.h"
30 #include "lsst/afw/coord/Weather.h"
31 
32 namespace lsst {
33 namespace afw {
34 namespace coord {
35 
37  : _airTemperature(airTemperature), _airPressure(airPressure), _humidity(humidity) {
38  validate();
39 }
40 
41 bool Weather::operator==(Weather const& other) const noexcept {
42  // Weather may be initialized to NaN values as a placeholder, or to indicate "unknown".
43  bool tempMatch = (std::isnan(_airTemperature) && std::isnan(other.getAirTemperature())) ||
44  _airTemperature == other.getAirTemperature();
45  bool presMatch = (std::isnan(_airPressure) && std::isnan(other.getAirPressure())) ||
46  _airPressure == other.getAirPressure();
47  bool humiMatch =
48  (std::isnan(_humidity) && std::isnan(other.getHumidity())) || _humidity == other.getHumidity();
49  return (tempMatch && presMatch && humiMatch);
50 }
51 
52 std::size_t Weather::hash_value() const noexcept {
53  // Completely arbitrary seed
54  return utils::hashCombine(17, _airTemperature, _airPressure, _humidity);
55 }
56 
57 void Weather::validate() const {
58  if (_humidity < 0.0) { // allow > 100 even though supersaturation is most unlikely
60  os << "Relative humidity = " << _humidity << " must not be negative";
62  }
63 }
64 
66  return os << "Weather(" << weath.getAirTemperature() << ", " << weath.getAirPressure() << ", "
67  << weath.getHumidity() << ")";
68 }
69 } // namespace coord
70 } // namespace afw
71 } // namespace lsst
#define LSST_EXCEPT(type,...)
Create an exception with a given type.
Definition: Exception.h:48
std::ostream * os
Definition: Schema.cc:557
table::Key< double > airPressure
Definition: VisitInfo.cc:217
table::Key< double > airTemperature
Definition: VisitInfo.cc:216
table::Key< double > humidity
Definition: VisitInfo.cc:218
Basic weather information sufficient for a simple model for air mass or refraction.
Definition: Weather.h:38
bool operator==(Weather const &other) const noexcept
Definition: Weather.cc:41
double getHumidity() const noexcept
get outside relative humidity (%)
Definition: Weather.h:70
double getAirPressure() const noexcept
get outside air pressure (Pascal)
Definition: Weather.h:67
double getAirTemperature() const noexcept
get outside air temperature (C)
Definition: Weather.h:64
Weather(double airTemperature, double airPressure, double humidity)
Construct a Weather.
Definition: Weather.cc:36
std::size_t hash_value() const noexcept
Return a hash of this object.
Definition: Weather.cc:52
Reports invalid arguments.
Definition: Runtime.h:66
T isnan(T... args)
std::ostream & operator<<(std::ostream &os, Observatory const &obs)
Print an Observatory to the stream.
Definition: Observatory.cc:64
std::size_t hashCombine(std::size_t seed) noexcept
Combine hashes.
Definition: hashCombine.h:35
A base class for image defects.