88 |
|
#include "rtio.h" |
89 |
|
#include "color.h" |
90 |
|
#include "sun.h" |
91 |
+ |
#include "loadEPW.h" |
92 |
|
|
92 |
– |
char *progname; /* Program name */ |
93 |
|
const double DC_SolarConstantE = 1367.0; /* Solar constant W/m^2 */ |
94 |
|
const double DC_SolarConstantL = 127.5; /* Solar constant klux */ |
95 |
|
|
128 |
|
extern void CalcSkyPatchLumin( float *parr ); |
129 |
|
extern void ComputeSky( float *parr ); |
130 |
|
|
131 |
+ |
|
132 |
+ |
extern double solar_sunset(int month, int day); |
133 |
+ |
extern double solar_sunrise(int month, int day); |
134 |
+ |
|
135 |
|
/* Degrees into radians */ |
136 |
|
#define DegToRad(deg) ((deg)*(PI/180.)) |
137 |
|
|
309 |
|
int |
310 |
|
main(int argc, char *argv[]) |
311 |
|
{ |
312 |
< |
char buf[256]; |
312 |
> |
EPWheader *epw = NULL; /* EPW/WEA input file */ |
313 |
> |
EPWrecord erec; /* current EPW/WEA input record */ |
314 |
> |
float dpthist[2]; /* previous dew point temps */ |
315 |
> |
double dir, dif; |
316 |
|
int doheader = 1; /* output header? */ |
317 |
|
double rotation = 0; /* site rotation (degrees) */ |
318 |
|
double elevation; /* site elevation (meters) */ |
327 |
|
int tstorage = 0; /* number of allocated time steps */ |
328 |
|
int nstored = 0; /* number of time steps in matrix */ |
329 |
|
int last_monthly = 0; /* month of last report */ |
323 |
– |
int mo, da; /* month (1-12) and day (1-31) */ |
324 |
– |
double hr; /* hour (local standard time) */ |
325 |
– |
double dir, dif; /* direct and diffuse values */ |
330 |
|
int mtx_offset; |
331 |
|
int i, j; |
332 |
+ |
double timeinterval = 0; |
333 |
|
|
334 |
< |
progname = argv[0]; |
334 |
> |
fixargv0(argv[0]); |
335 |
|
/* get options */ |
336 |
|
for (i = 1; i < argc && argv[i][0] == '-'; i++) |
337 |
|
switch (argv[i][1]) { |
431 |
|
case 'A': /* compute average sky */ |
432 |
|
avgSky = 1; |
433 |
|
break; |
434 |
+ |
case 'i': |
435 |
+ |
timeinterval = atof(argv[++i]); |
436 |
+ |
break; |
437 |
|
default: |
438 |
|
goto userr; |
439 |
|
} |
440 |
< |
if (i < argc-1) |
440 |
> |
if ((i < argc-1) | (i > argc)) |
441 |
|
goto userr; |
442 |
< |
if (i == argc-1 && freopen(argv[i], "r", stdin) == NULL) { |
443 |
< |
fprintf(stderr, "%s: cannot open '%s' for input\n", |
436 |
< |
progname, argv[i]); |
442 |
> |
epw = EPWopen(argv[i]); |
443 |
> |
if (epw == NULL) |
444 |
|
exit(1); |
438 |
– |
} |
445 |
|
if ((modsfp != NULL) & (sunsfp == NULL)) |
446 |
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fprintf(stderr, "%s: warning -M output will be empty without -D\n", |
447 |
|
progname); |
454 |
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progname); |
455 |
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} |
456 |
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/* read weather tape header */ |
457 |
< |
if (scanf("place %[^\r\n] ", buf) != 1) |
458 |
< |
goto fmterr; |
459 |
< |
if (scanf("latitude %lf\n", &s_latitude) != 1) |
460 |
< |
goto fmterr; |
461 |
< |
if (scanf("longitude %lf\n", &s_longitude) != 1) |
462 |
< |
goto fmterr; |
463 |
< |
if (scanf("time_zone %lf\n", &s_meridian) != 1) |
458 |
< |
goto fmterr; |
459 |
< |
if (scanf("site_elevation %lf\n", &elevation) != 1) |
460 |
< |
goto fmterr; |
461 |
< |
if (scanf("weather_data_file_units %d\n", &input) != 1) |
462 |
< |
goto fmterr; |
463 |
< |
switch (input) { /* translate units */ |
464 |
< |
case 1: |
457 |
> |
s_latitude = epw->loc.latitude; |
458 |
> |
s_longitude = -epw->loc.longitude; |
459 |
> |
s_meridian = -15.*epw->loc.timezone; |
460 |
> |
elevation = epw->loc.elevation; |
461 |
> |
switch (epw->isWEA) { /* translate units */ |
462 |
> |
case WEAnot: |
463 |
> |
case WEAradnorm: |
464 |
|
input = 1; /* radiometric quantities */ |
465 |
|
dir_is_horiz = 0; /* direct is perpendicular meas. */ |
466 |
|
break; |
467 |
< |
case 2: |
467 |
> |
case WEAradhoriz: |
468 |
|
input = 1; /* radiometric quantities */ |
469 |
|
dir_is_horiz = 1; /* solar measured horizontally */ |
470 |
|
break; |
471 |
< |
case 3: |
471 |
> |
case WEAphotnorm: |
472 |
|
input = 2; /* photometric quantities */ |
473 |
|
dir_is_horiz = 0; /* direct is perpendicular meas. */ |
474 |
|
break; |
477 |
|
} |
478 |
|
rh_init(); /* initialize sky patches */ |
479 |
|
if (verbose) { |
480 |
< |
fprintf(stderr, "%s: location '%s'\n", progname, buf); |
480 |
> |
fprintf(stderr, "%s: location '%s, %s'\n", progname, |
481 |
> |
epw->loc.city, epw->loc.country); |
482 |
|
fprintf(stderr, "%s: (lat,long)=(%.1f,%.1f) degrees north, west\n", |
483 |
|
progname, s_latitude, s_longitude); |
484 |
|
if (avgSky >= 0) |
497 |
|
s_meridian = DegToRad(s_meridian); |
498 |
|
/* initial allocation */ |
499 |
|
mtx_data = resize_dmatrix(mtx_data, tstorage=2, nskypatch); |
500 |
+ |
dpthist[0] = -100; |
501 |
|
/* process each time step in tape */ |
502 |
< |
while (scanf("%d %d %lf %lf %lf\n", &mo, &da, &hr, &dir, &dif) == 5) { |
503 |
< |
double sda, sta; |
502 |
> |
while ((j = EPWread(epw, &erec)) > 0) { |
503 |
> |
const int mo = erec.date.month+1; |
504 |
> |
const int da = erec.date.day; |
505 |
> |
const double hr = erec.date.hour; |
506 |
> |
double sda, sta, st; |
507 |
|
int sun_in_sky; |
508 |
+ |
/* 3-hour dew point temp */ |
509 |
+ |
if (EPWisset(&erec,dptemp)) { |
510 |
+ |
if (dpthist[0] < -99) |
511 |
+ |
dpthist[0] = dpthist[1] = erec.dptemp; |
512 |
+ |
dew_point = (1./3.)*(dpthist[0] + dpthist[1] + erec.dptemp); |
513 |
+ |
dpthist[0] = dpthist[1]; dpthist[1] = erec.dptemp; |
514 |
+ |
} else |
515 |
+ |
dpthist[0] = -100; |
516 |
|
/* compute solar position */ |
517 |
|
if ((mo == 2) & (da == 29)) { |
518 |
|
julian_date = 60; |
521 |
|
julian_date = jdate(mo, da) + leap_day; |
522 |
|
sda = sdec(julian_date); |
523 |
|
sta = stadj(julian_date); |
524 |
< |
altitude = salt(sda, hr+sta); |
524 |
> |
st = hr + sta; |
525 |
> |
|
526 |
> |
if (timeinterval > 0) { |
527 |
> |
if (fabs(solar_sunrise(mo, da) - st) <= timeinterval/120) |
528 |
> |
st = (st + timeinterval/120 + solar_sunrise(mo, da))/2; |
529 |
> |
else if (fabs(solar_sunset(mo, da) - st) < timeinterval/120) |
530 |
> |
st = (st - timeinterval/120 + solar_sunset(mo, da))/2; |
531 |
> |
} |
532 |
> |
altitude = salt(sda, st); |
533 |
|
sun_in_sky = (altitude > -DegToRad(SUN_ANG_DEG/2.)); |
534 |
< |
if (sun_hours_only && !sun_in_sky) |
534 |
> |
if (sun_hours_only & !sun_in_sky) |
535 |
|
continue; /* skipping nighttime points */ |
536 |
< |
azimuth = sazi(sda, hr+sta) + PI - DegToRad(rotation); |
536 |
> |
azimuth = sazi(sda, st) + PI - DegToRad(rotation); |
537 |
|
|
538 |
+ |
switch (epw->isWEA) { /* translate units */ |
539 |
+ |
case WEAnot: |
540 |
+ |
case WEAradnorm: |
541 |
+ |
if (!EPWisset(&erec,dirirrad) | |
542 |
+ |
!EPWisset(&erec,horizdiffirrad)) { |
543 |
+ |
fprintf(stderr, "%s: missing required irradiances at line %d\n", |
544 |
+ |
progname, epw->lino); |
545 |
+ |
exit(1); |
546 |
+ |
} |
547 |
+ |
dir = erec.dirirrad; |
548 |
+ |
dif = erec.horizdiffirrad; |
549 |
+ |
break; |
550 |
+ |
case WEAradhoriz: |
551 |
+ |
dir = erec.globhorizirrad - erec.horizdiffirrad; |
552 |
+ |
dif = erec.horizdiffirrad; |
553 |
+ |
break; |
554 |
+ |
case WEAphotnorm: |
555 |
+ |
dir = erec.dirillum; |
556 |
+ |
dif = erec.diffillum; |
557 |
+ |
break; |
558 |
+ |
} |
559 |
|
mtx_offset = 3*nskypatch*nstored; |
560 |
|
nstored += !avgSky | !nstored; |
561 |
|
/* make space for next row */ |
609 |
|
progname, last_monthly=mo); |
610 |
|
/* note whether leap-day was given */ |
611 |
|
} |
612 |
+ |
if (j != EOF) { |
613 |
+ |
fprintf(stderr, "%s: error on input\n", progname); |
614 |
+ |
exit(1); |
615 |
+ |
} |
616 |
+ |
EPWclose(epw); epw = NULL; |
617 |
|
if (!ntsteps) { |
618 |
|
fprintf(stderr, "%s: no valid time steps on input\n", progname); |
619 |
|
exit(1); |
620 |
|
} |
575 |
– |
/* check for junk at end */ |
576 |
– |
while ((i = fgetc(stdin)) != EOF) |
577 |
– |
if (!isspace(i)) { |
578 |
– |
fprintf(stderr, "%s: warning - unexpected data past EOT: ", |
579 |
– |
progname); |
580 |
– |
buf[0] = i; buf[1] = '\0'; |
581 |
– |
fgets(buf+1, sizeof(buf)-1, stdin); |
582 |
– |
fputs(buf, stderr); fputc('\n', stderr); |
583 |
– |
break; |
584 |
– |
} |
585 |
– |
|
621 |
|
if (avgSky < 0) /* no matrix output? */ |
622 |
|
goto alldone; |
623 |
|
|
699 |
|
exit(1); |
700 |
|
} |
701 |
|
|
702 |
+ |
|
703 |
|
/* Return maximum of two doubles */ |
704 |
|
double dmax( double a, double b ) |
705 |
|
{ return (a > b) ? a : b; } |
711 |
|
int index; /* Category index */ |
712 |
|
double norm_diff_illum; /* Normalized diffuse illuimnance */ |
713 |
|
int i; |
714 |
< |
|
714 |
> |
|
715 |
|
/* Calculate atmospheric precipitable water content */ |
716 |
|
apwc = CalcPrecipWater(dew_point); |
717 |
|
|
745 |
|
/* Limit sky clearness */ |
746 |
|
if (sky_clearness > 11.9) |
747 |
|
sky_clearness = 11.9; |
748 |
+ |
else if (sky_clearness < 1.0) |
749 |
+ |
sky_clearness = 1.0; |
750 |
|
|
751 |
|
/* Limit sky brightness */ |
752 |
|
if (sky_brightness < 0.01) |
753 |
|
sky_brightness = 0.01; |
754 |
+ |
else if (sky_brightness > 0.6) |
755 |
+ |
sky_brightness = 0.6; |
756 |
|
|
757 |
|
/* Calculate illuminance */ |
758 |
|
index = GetCategoryIndex(); |
805 |
|
} |
806 |
|
} |
807 |
|
|
808 |
+ |
|
809 |
+ |
double |
810 |
+ |
solar_sunset(int month, int day) |
811 |
+ |
{ |
812 |
+ |
float W; |
813 |
+ |
W = -1 * (tan(s_latitude) * tan(sdec(jdate(month, day)))); |
814 |
+ |
return(12 + (M_PI / 2 - atan2(W, sqrt(1 - W * W))) * 180 / (M_PI * 15)); |
815 |
+ |
} |
816 |
+ |
|
817 |
+ |
|
818 |
+ |
double |
819 |
+ |
solar_sunrise(int month, int day) |
820 |
+ |
{ |
821 |
+ |
float W; |
822 |
+ |
W = -1 * (tan(s_latitude) * tan(sdec(jdate(month, day)))); |
823 |
+ |
return(12 - (M_PI / 2 - atan2(W, sqrt(1 - W * W))) * 180 / (M_PI * 15)); |
824 |
+ |
} |
825 |
+ |
|
826 |
+ |
|
827 |
|
/* Add in solar direct to nearest sky patches (GW) */ |
828 |
|
void |
829 |
|
AddDirect(float *parr) |
1093 |
|
if (sky_brightness < 0.01) |
1094 |
|
sky_brightness = 0.01; |
1095 |
|
|
1096 |
+ |
if (sky_clearness < 1.0000) |
1097 |
+ |
{ |
1098 |
+ |
sky_clearness = 1.0000; |
1099 |
+ |
} |
1100 |
+ |
|
1101 |
+ |
if (sky_brightness > 0.6) |
1102 |
+ |
{ |
1103 |
+ |
sky_brightness = 0.6; |
1104 |
+ |
} |
1105 |
+ |
|
1106 |
|
while (((fabs(diff_irrad - test1) > 10.0) || |
1107 |
|
(fabs(dir_irrad - test2) > 10.0)) && !(counter == 5)) |
1108 |
|
{ |
1128 |
|
/* Limit sky brightness */ |
1129 |
|
if (sky_brightness < 0.01) |
1130 |
|
sky_brightness = 0.01; |
1131 |
+ |
|
1132 |
+ |
if (sky_clearness < 1.0000) |
1133 |
+ |
{ |
1134 |
+ |
sky_clearness = 1.0000; |
1135 |
+ |
} |
1136 |
+ |
|
1137 |
+ |
if (sky_brightness > 0.6) |
1138 |
+ |
{ |
1139 |
+ |
sky_brightness = 0.6; |
1140 |
+ |
} |
1141 |
|
} |
1142 |
|
|
1143 |
|
return GetCategoryIndex(); |