/* rebuild the map at a given date */
bool MagneticPlotMap::Recompute(wxDateTime date)
{
if(!m_bEnabled)
return true;
UserDate.Year = date.GetYear();
UserDate.Month = date.GetMonth();
UserDate.Day = date.GetDay();
char err[255];
WMM_DateToYear(&UserDate, err);
/* Time adjust the coefficients, Equation 19, WMM Technical report */
WMM_TimelyModifyMagneticModel(UserDate, MagneticModel, TimedMagneticModel);
return IsoBarMap::Recompute()
}
int main(int argv, char**argc)
{
#ifdef MAC
ccommand(argv, argc);
#endif
/* WMM Variable declaration */
WMMtype_MagneticModel *MagneticModel, *TimedMagneticModel;
WMMtype_Ellipsoid Ellip;
WMMtype_CoordSpherical CoordSpherical;
WMMtype_CoordGeodetic CoordGeodetic;
WMMtype_Date UserDate;
WMMtype_GeoMagneticElements GeoMagneticElements;
WMMtype_Geoid Geoid;
double b;
char a;
char ans[20];
char filename[] = "WMM.COF";
int NumTerms, Flag = 1;
/* Control variables */
int again = 1;
int decyears = 3;
int units = 4;
int decdeg = 3;
int range = -1;
int counter = 0;
int nmax;
int igdgc=3;
int isyear=-1;
int ismonth=-1;
int isday=-1;
int ieyear=-1;
int iemonth=-1;
int ieday=-1;
int ilat_deg=200;
int ilat_min=200;
int ilat_sec=200;
int ilon_deg=200;
int ilon_min=200;
int ilon_sec=200;
int fileline;
int ddeg, ideg;
int coords_from_file = 0;
int arg_err = 0;
char mdfile[PATH];
char inbuff[MAXINBUFF];
char *begin;
char *rest;
char args[7][MAXREAD];
int iarg;
char coord_fname[PATH];
char out_fname[PATH];
FILE *coordfile,*outfile;
int iline=0;
int read_flag;
float minyr;
float maxyr;
float minalt;
float maxalt;
float alt=-999999;
float sdate=-1;
float step=-1;
float syr;
float edate=-1;
float latitude=200;
float longitude=200;
float dmin, imin;
/* Subroutines used */
void print_result_file(FILE *outf, double d, double i, double h, double x, double y, double z, double f,
double ddot, double idot, double hdot, double xdot, double ydot, double zdot, double fdot);
float degrees_to_decimal();
float julday();
int safegets(char *buffer,int n);
int getshc();
/* Initializations. */
inbuff[MAXREAD+1]='\0'; /* Just to protect mem. */
inbuff[MAXINBUFF-1]='\0'; /* Just to protect mem. */
/* Memory allocation */
NumTerms = ( ( WMM_MAX_MODEL_DEGREES + 1 ) * ( WMM_MAX_MODEL_DEGREES + 2 ) / 2 ); /* WMM_MAX_MODEL_DEGREES is defined in WMM_Header.h */
MagneticModel = WMM_AllocateModelMemory(NumTerms); /* For storing the WMM Model parameters */
TimedMagneticModel = WMM_AllocateModelMemory(NumTerms); /* For storing the time modified WMM Model parameters */
if(MagneticModel == NULL || TimedMagneticModel == NULL)
{
WMM_Error(2);
}
WMM_SetDefaults(&Ellip, MagneticModel, &Geoid); /* Set default values and constants */
/* Check for Geographic Poles */
//WMM_readMagneticModel_Large(filename, MagneticModel); //Uncomment this line when using the 740 model, and comment out the WMM_readMagneticModel line.
WMM_readMagneticModel(filename, MagneticModel);
WMM_InitializeGeoid(&Geoid); /* Read the Geoid file */
maxyr = MagneticModel->epoch + 5.0;
minyr = MagneticModel->epoch;
for (iarg=0; iarg<argv; iarg++)
if (argc[iarg] != NULL)
strncpy(args[iarg],argc[iarg],MAXREAD);
//printing out version number and header
printf("\n\n WMM_FileProc File processing program November 23, 2009 ");
if (argv==1 || ((argv==2)&&(*(args[1])=='h')))
{
printf("\n\nWorld Magnetic Model - File Processing Utility : USAGE:\n");
printf("coordinate file: wmm_file f input_file output_file\n");
printf("or for help: wmm_file h \n");
printf("\n");
printf("The input file may have any number of entries but they must follow\n");
printf("the following format\n");
printf("Date and location Formats: \n");
printf(" Date: xxxx.xxx for decimal (2013.7)\n");
printf(" Altitude: M - Above mean sea level: E above WGS84 Ellipsoid \n");
printf(" Altitude: Kxxxxxx.xxx for kilometers (K1000.13)\n");
printf(" Mxxxxxx.xxx for meters (m1389.24)\n");
printf(" Fxxxxxx.xxx for feet (F192133.73)\n");
printf(" Lat/Lon: xxx.xxx in decimal (-76.53)\n");
printf(" (Lat and Lon must be specified in the same format.)\n");
printf(" Date and altitude must fit model.\n");
printf(" Lat: -90 to 90 (Use - to denote Southern latitude.)\n");
printf(" Lon: -180 to 180 (Use - to denote Western longitude.)\n");
printf(" Date: 2010.0 to 2015.0\n");
printf(" An example of an entry in input file\n");
printf(" 2013.7 E F30000 -70.3 -30.8 \n");
printf("\n Press enter to exit.");
printf ("\n >");
fgets(ans, 20, stdin);
exit(2);
} /* help */
if ((argv==4)&&(*(args[1])=='f'))
{
printf("\n\n 'f' switch: converting file with multiple locations.\n");
printf(" The first five output columns repeat the input coordinates.\n");
printf(" Then follows D, I, H, X, Y, Z, and F.\n");
printf(" Finally the SV: dD, dI, dH, dX, dY, dZ, and dF\n");
printf(" The units are the same as when the program is\n");
printf(" run in command line or interactive mode.\n\n");
coords_from_file = 1;
strncpy(coord_fname,args[2],MAXREAD);
coordfile=fopen(coord_fname, "rt");
strncpy(out_fname,args[3],MAXREAD);
outfile=fopen(out_fname, "w");
fprintf(outfile,"Date Coord-System Altitude Latitude Longitude D_deg D_min I_deg I_min H_nT X_nT Y_nT Z_nT F_nT dD_min dI_min dH_nT dX_nT dY_nT dZ_nT dF_nT\n");
} /* file option */
if (argv>=2 && argv !=4)
{
printf("\n\nERROR in 'f' switch option: wrong number of arguments\n");
exit(2);
}
if (argv==1)
{
printf("\n\nERROR in switch option: wrong number of arguments\n");
exit(2);
}
while (again == 1)
{
if (coords_from_file)
{
argv = 6;
read_flag = fscanf(coordfile,"%s%s%s%s%s%*[^\n]",args[1],args[2],args[3],args[4],args[5]);
if (read_flag == EOF) goto reached_EOF;
fprintf(outfile,"%s %s %s %s %s ",args[1],args[2],args[3],args[4],args[5]);fflush(outfile);
iline++;
} /* coords_from_file */
/* Switch on how many arguments are supplied. */
/* Note that there are no 'breaks' after the cases, so these are entry points */
switch(argv)
{
case 6 : strncpy(inbuff, args[5], MAXREAD);
if ((rest=strchr(inbuff, ','))) /* If it contains a comma */
{
decdeg=2; /* Then not decimal degrees */
begin=inbuff;
rest[0]='\0'; /* Chop into sub string */
rest++; /* Move to next substring */
ilon_deg=atoi(begin);
begin=rest;
if ((rest=strchr(begin, ',')))
{
rest[0]='\0';
rest++;
ilon_min=atoi(begin);
ilon_sec=atoi(rest);
}
else
{
ilon_min=0;
ilon_sec=0;
}
}
else
{
decdeg=1; /* Else it's decimal */
longitude=atof(args[5]);
}
case 5 : strncpy(inbuff, args[4], MAXREAD);
if ((rest=strchr(inbuff, ',')))
{
decdeg=2;
begin=inbuff;
rest[0]='\0';
rest++;
ilat_deg=atoi(begin);
begin=rest;
if ((rest=strchr(begin, ',')))
{
rest[0]='\0';
rest++;
ilat_min=atoi(begin);
ilat_sec=atoi(rest);
}
else
{
ilat_min=0;
ilat_sec=0;
}
}
else
{
decdeg=1;
latitude=atof(args[4]);
}
case 4 : strncpy(inbuff, args[3], MAXREAD);
inbuff[0]=toupper(inbuff[0]);
if (inbuff[0]=='K') units=1;
else if (inbuff[0]=='M') units=2;
else if (inbuff[0]=='F') units=3;
if (strlen(inbuff)>1)
{
inbuff[0]='\0';
begin=inbuff+1;
alt=atof(begin);
}
case 3 : strncpy(inbuff, args[2], MAXREAD);
inbuff[0]=toupper(inbuff[0]);
if (inbuff[0]=='M') igdgc=1; /* height is above mean sea level*/
else if (inbuff[0]=='E') igdgc=2; /* height is above WGS 84 ellepsoid */
case 2 : strncpy(inbuff, args[1], MAXREAD);
if ((rest=strchr(inbuff, '-'))) /* If it contains a dash */
{
range = 2; /* They want a range */
rest[0]='\0'; /* Sep dates */
rest++;
begin=rest;
if ((rest=strchr(begin, '-'))) /* If it contains 2 dashs */
{
rest[0]='\0'; /* Sep step */
rest++;
step=atof(rest); /* Get step size */
}
if ((rest=strchr(begin, ','))) /* If it contains a comma */
{
decyears=2; /* It's not decimal years */
rest[0]='\0';
rest++;
ieyear=atoi(begin);
begin=rest;
if ((rest=strchr(begin, ',')))
{
rest[0]='\0';
rest++;
iemonth=atoi(begin);
ieday=atoi(rest);
}
else
{
iemonth=0;
ieday=0;
}
if ((rest=strchr(inbuff, ',')))
{
begin=inbuff;
rest[0]='\0';
rest++;
isyear=atoi(begin);
begin=rest;
if ((rest=strchr(begin, ',')))
{
rest[0]='\0';
rest++;
ismonth=atoi(begin);
isday=atoi(rest);
}
else
{
ismonth=0;
isday=0;
}
}
else
{
sdate=atof(inbuff);
}
}
else
{
decyears=1; /* Else it's decimal years */
sdate=atof(inbuff);
edate=atof(begin);
}
}
else
{
range = 1;
if ((rest=strchr(inbuff, ','))) /* If it contains a comma */
{
decyears=2; /* It's not decimal years */
begin=inbuff;
rest[0]='\0';
rest++;
isyear=atoi(begin);
begin=rest;
if ((rest=strchr(begin, ',')))
{
rest[0]='\0';
rest++;
ismonth=atoi(begin);
isday=atoi(rest);
}
else
{
ismonth=0;
isday=0;
}
}
else
{
decyears=1; /* Else it's decimal years */
sdate=atof(args[1]);
}
}
if (sdate==0)
{ /* If date not valid */
decyears=-1;
range=-1;
}
break;
}
if (range == 2 && coords_from_file)
{
printf("Error in line %1d, date = %s: date ranges not allowed for file option\n\n",iline,args[1]);
exit(2);
}
/* Obtain the desired model file and read the data */
/* if date specified in command line then warn if past end of validity */
/* Take in field data */
/* Get date */
if (coords_from_file && !arg_err && (decyears != 1 && decyears != 2))
{printf("\nError: unrecognized date %s in coordinate file line %1d\n\n",args[1],iline); arg_err = 1;}
if (coords_from_file && !arg_err && range != 1)
{printf("\nError: unrecognized date %s in coordinate file line %1d\n\n",args[1],iline); arg_err = 1;}
if (coords_from_file && !arg_err && (sdate < minyr || sdate >maxyr))
{printf("\nWarning: date out of range in coordinate file line %1d\n\n",iline);
printf("\nExpected range = %6.1lf - %6.1lf, entered %6.1lf\n",minyr,maxyr,sdate);}
/* Get altitude min and max for selected model. */
minalt= -10; /* To be defined */
maxalt= 1000;
/* Get Coordinate prefs */
if (coords_from_file && !arg_err && (igdgc != 1 && igdgc != 2))
{printf("\nError: Unrecognized height reference. %1d\n\n",args[1],iline); arg_err = 1;}
/* If needed modify height referencing */
if (igdgc==2)
{
Geoid.UseGeoid = 0; /* height above WGS-84 Ellipsoid */
}else if (igdgc==1)
{
Geoid.UseGeoid = 1; /* height above MSL */
}
/* Do unit conversions if neccessary */
if (units==2)
{
minalt*=1000.0;
maxalt*=1000.0;
}
else if (units==3)
{
minalt*=3280.0839895;
maxalt*=3280.0839895;
}
/* Get altitude */
if (coords_from_file && !arg_err && (alt < minalt || alt > maxalt))
{printf("\nError: unrecognized altitude %s in coordinate file line %1d\n\n",args[3],iline); arg_err = 1;}
/* Convert altitude to km */
if (units==2)
{
alt *= 0.001;
}
else if (units==3)
{
alt /= 3280.0839895;
}
/* Get lat/long prefs */
if (coords_from_file && !arg_err && decdeg != 1 )
{printf("\nError: unrecognized lat %s or lon %s in coordinate file line %1d\n\n",args[4],args[5],iline); arg_err = 1;}
/* Get lat/lon */
/** This will compute everything needed for 1 point in time. **/
CoordGeodetic.lambda = longitude;
CoordGeodetic.phi = latitude;
CoordGeodetic.HeightAboveGeoid = alt;
UserDate.DecimalYear = sdate;
WMM_ConvertGeoidToEllipsoidHeight(&CoordGeodetic, &Geoid); /*This converts the height above mean sea level to height above the WGS-84 ellipsoid*/
WMM_GeodeticToSpherical(Ellip, CoordGeodetic, &CoordSpherical); /*Convert from geodeitic to Spherical Equations: 17-18, WMM Technical report*/
WMM_TimelyModifyMagneticModel(UserDate, MagneticModel, TimedMagneticModel); /* Time adjust the coefficients, Equation 19, WMM Technical report */
WMM_Geomag(Ellip, CoordSpherical, CoordGeodetic, TimedMagneticModel, &GeoMagneticElements); /* Computes the geoMagnetic field elements and their time change*/
WMM_CalculateGridVariation(CoordGeodetic,&GeoMagneticElements);
/** Above will compute everything for 1 point in time. **/
/* Output the final results. */
if (coords_from_file)
{
print_result_file(outfile,
GeoMagneticElements.Decl,
GeoMagneticElements.Incl,
GeoMagneticElements.H,
GeoMagneticElements.X,
GeoMagneticElements.Y,
GeoMagneticElements.Z,
GeoMagneticElements.F,
60 * GeoMagneticElements.Decldot,
60 * GeoMagneticElements.Incldot,
GeoMagneticElements.Hdot,
GeoMagneticElements.Xdot,
GeoMagneticElements.Ydot,
GeoMagneticElements.Zdot,
GeoMagneticElements.Fdot);
}
if (coords_from_file)
again = !feof(coordfile) && !arg_err;
if (again == 1)
{
/* Reset defaults to catch on all while loops */
igdgc=decyears=units=decdeg=-1;
ismonth=isday=isyear=sdate=edate=range=step=-1;
latitude=ilat_deg=ilat_min=ilat_sec=200;
longitude=ilon_deg=ilon_min=ilon_sec=200;
alt=-9999999;
argv = 1;
}
} /* while (again == 1) */
reached_EOF:
if (coords_from_file) printf("\n Processed %1d lines\n\n",iline);
if (coords_from_file && !feof(coordfile) && arg_err) printf("Terminated prematurely due to argument error in coordinate file\n\n");
fclose(coordfile);
fclose(outfile);
WMM_FreeMagneticModelMemory(MagneticModel);
WMM_FreeMagneticModelMemory(TimedMagneticModel);
if (Geoid.GeoidHeightBuffer)
{
free(Geoid.GeoidHeightBuffer);
Geoid.GeoidHeightBuffer = NULL;
}
return 0;
}
