This is a funny question. How to make this switch statement faster? I have the UTM hemisphere (N for North and S for South) and the UTM zone (1-60) and need to get the WKID to know from where to project my coordinates. Well, this switch statement is huge. 😉Diggin' deeper down: I could go another way and parse the zone to the 10s number, then the 1s number, then the hemisphere. Otherwise I could use a dojox dictionary. I decided not to use a dictionary because I thought that another object in memory would be too much. Don't know the best way to handle something like this with JavaScript.Otherwise: Writing this code was easy, copy and paste the lines directly from the JS-API documentation and change it with find/replace of regular expressions/line feeds/beginning of line/tabs.Best regards and have a nice day.function getUTMZone(hemi, zone) {
if (hemi == "N") {
switch (zone) {
case 1:
return 32601; // WGS_1984_UTM_Zone_1N
break;
case 2:
return 32602; // WGS_1984_UTM_Zone_2N
break;
case 3:
return 32603; // WGS_1984_UTM_Zone_3N
break;
case 4:
return 32604; // WGS_1984_UTM_Zone_4N
break;
case 5:
return 32605; // WGS_1984_UTM_Zone_5N
break;
case 6:
return 32606; // WGS_1984_UTM_Zone_6N
break;
case 7:
return 32607; // WGS_1984_UTM_Zone_7N
break;
case 8:
return 32608; // WGS_1984_UTM_Zone_8N
break;
case 9:
return 32609; // WGS_1984_UTM_Zone_9N
break;
case 10:
return 32610; // WGS_1984_UTM_Zone_10N
break;
[...]
}
} else if (hemi == "S") {
switch (zone) {
case 1:
return 32701; // WGS_1984_UTM_Zone_1S
break;
case 2:
return 32702; // WGS_1984_UTM_Zone_2S
break;
case 3:
return 32703; // WGS_1984_UTM_Zone_3S
break;
case 4:
return 32704; // WGS_1984_UTM_Zone_4S
break;
case 5:
return 32705; // WGS_1984_UTM_Zone_5S
break;
case 6:
return 32706; // WGS_1984_UTM_Zone_6S
break;
case 7:
return 32707; // WGS_1984_UTM_Zone_7S
break;
case 8:
return 32708; // WGS_1984_UTM_Zone_8S
break;
case 9:
return 32709; // WGS_1984_UTM_Zone_9S
break;
case 10:
return 32710; // WGS_1984_UTM_Zone_10S
break;
[...]
}
}
}
