001 /**
002 *
003 */
004 package org.wdssii.dualpol;
005
006 import org.apache.commons.logging.Log;
007 import org.apache.commons.logging.LogFactory;
008 import org.wdssii.core.Location;
009
010 import ucar.nc2.Attribute;
011
012
013 /**
014 *
015 * Deals with properties that may be missing in the IDL files themselves
016 * These are obtained from the environment, so set a Java property of the
017 * form org.wdssii.dualpol.deltaLat=0.005 to change the value
018 *
019 * @author lakshman
020 *
021 */
022 public class IDLGridProperties {
023 private static Log log = LogFactory.getLog(IDLGridProperties.class);
024
025 private static String getProperty(String name, String defaultValue){
026 String result = defaultValue;
027 String userValue = System.getProperty(name);
028 if ( userValue != null ){
029 result = userValue;
030 }
031 log.info("Using " + result + " for " + name);
032 return result;
033 }
034
035 private static float getProperty(String name, float defaultValue){
036 float result = defaultValue;
037 String userValue = System.getProperty(name);
038 if ( userValue != null ){
039 result = Float.parseFloat(userValue);
040 }
041 log.info("Using " + result + " for " + name);
042 return result;
043 }
044
045 private float deltaLat;
046 private float deltaLon;
047 private float deltaHeightKms;
048 private float radarLat;
049 private float radarLon;
050 private float radarHtKms;
051
052 public IDLGridProperties(Attribute radarlat, Attribute radarlon,
053 Attribute ident, Attribute xdelta, Attribute ydelta, Attribute zdelta){
054
055 if ( radarlat != null && radarlon != null ){
056 radarLat = radarlat.getNumericValue().floatValue();
057 radarLon = radarlon.getNumericValue().floatValue();
058 radarHtKms = 0;
059 log.info("Initializing radar location to " + new Location(radarLat, radarLon, radarHtKms));
060 } else if ( ident != null && ident.getStringValue().equals("KOUN")){
061 radarLat = 35.236f;
062 radarLon = -97.463f;
063 radarHtKms = 0.377f;
064 log.info("Initializing radar location to known value for KOUN");
065 } else {
066 radarLat = getProperty("org.wdssii.dualpol.radarLat",35.236f);
067 radarLon = getProperty("org.wdssii.dualpol.radarLon",-97.463f);
068 radarHtKms = getProperty("org.wdssii.dualpol.radarHtKms",0.377f);
069 }
070
071 if ( xdelta != null ){
072 deltaLon = xdelta.getNumericValue().floatValue() * 0.01f; // km to degrees (approx)
073 } else {
074 deltaLon = getProperty("org.wdssii.dualpol.deltaLon",0.005f);
075 }
076
077 if ( ydelta != null ){
078 deltaLat = ydelta.getNumericValue().floatValue() * 0.01f; // km to degrees (approx);
079 } else {
080 deltaLat = getProperty("org.wdssii.dualpol.deltaLat",0.005f);
081 }
082
083 if ( zdelta != null ){
084 deltaHeightKms = zdelta.getNumericValue().floatValue();
085 } else {
086 deltaHeightKms = getProperty("org.wdssii.dualpol.deltaHeightKms",0.25f);
087 }
088
089 log.info("deltaLat=" + deltaLat + " deltaLon=" + deltaLon + " deltaHt=" + deltaHeightKms);
090 }
091
092 public float getDeltaLat() {
093 return deltaLat;
094 }
095
096 public float getDeltaLon() {
097 return deltaLon;
098 }
099
100 public float getDeltaHeightKms() {
101 return deltaHeightKms;
102 }
103
104 public float getRadarLat() {
105 return radarLat;
106 }
107
108 public float getRadarLon() {
109 return radarLon;
110 }
111
112 public float getRadarHtKms() {
113 return radarHtKms;
114 }
115
116 public String getTypeName(String variableName){
117 if ( variableName.equals("RH") ){
118 return "RhoHV";
119 } else if ( variableName.equals("DZ") ){
120 return "Reflectivity";
121 } else if ( variableName.equals("DR") ){
122 return "Zdr";
123 } else if ( variableName.equals("KD") ){
124 return "Kdp";
125 } else {
126 return variableName;
127 }
128 }
129
130 public static String getFileNameDateFormat(){
131 return getProperty("org.wdssii.dualpol.fileNameDateFormat","MMddyy_HHmmss");
132 }
133 }