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Conversion du code javascript en matlab

Fermé
arnold2008 - 21 oct. 2008 à 11:28
Sacabouffe Messages postés 9427 Date d'inscription dimanche 19 août 2007 Statut Membre Dernière intervention 29 mai 2009 - 22 oct. 2008 à 22:54
Bonjour,

J'ai un mini programme écrit sous javascript et je voudrai le convertir en matlab. Quelqu'un peut-il m'aider s'il vous plaît?
Merci d'avance et au plaisir de lire votre proposition.
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4 réponses

Réponse 1 / 4
arnold2008
21 oct. 2008 à 13:01
Slt, voici le programme en kestion:
<script language="JavaScript" type="text/javascript">
// global variables
var mw; // milliwatts
var w; // watts
var dbm; // dBm
var dbw; // dBW
var num; // intermediate results
var f; // frequency
var d; // distance
var ktm = .621; // km to miles
var mtk = 1.609; // miles to klics
var ftm = 3.28; // meters to feet
var mtf = .3048 // feet to meters
var db; // work variable
function round(number,places) {
// rounding numbers default = 3
places = (!places ? 3 : places);
return Math.round(number*Math.pow(10,places))/Math.pow(10,places);
}

function log10(x) {
// Log 10 calculation
return(Math.log(x) / Math.log(10));
}

function from_dbm(u_dbm) {
// convert dbm to watts and milliwatts
dbm = parseFloat(u_dbm);

// validate dbm range
if ((isNaN(dbm)) || (dbm < -110) || (dbm > 100))
{
window.alert("dBm range from -110 to 100");
return("Error");
}

mw = Math.pow(10,dbm / 10);

return(round(mw,3));
}

function to_dbm(u_mw) {
w = parseFloat(u_mw);

// validate milliwatts range
if ((isNaN(w)) || (w < 0) || (w > 20000))
{
window.alert("millWatts range = 0 to 20,000");

return("Error");
}
w = log10(w) / log10(10);
dbm = round((10 * w),3);
return(dbm);
}

function free_space(u_freq, u_km, u_miles) {

f = parseFloat(u_freq);
if ((d = check_m(u_km,u_miles,"Distance")) == "Error")
{
return("Error");
}
// validate frequency
if ((isNaN(f)) || (f < 100) || (f > 60000))
{
window.alert("Frequency (in MHz) range = 100 to 60,000");
return("Error");
}

f = log10(f) / log10(10);
d = log10(d) / log10(10);

return(round((20 * f) + (20 * d) + 36.56,3));

}
function check_dbm(u_dbm, u_mw)
{
// normalise power to dbm
if(u_dbm == "")
{
dbm = to_dbm(u_mw);
}
else
{
dbm = parseFloat(u_dbm);
}
//validate dbm range
if ((isNaN(dbm)) || (dbm < -110) || (dbm > 100))
{
window.alert("dBm range from -110 to 100");
return("Error");
}
return(dbm);
}

function check_km(k,m,e) // returns KM
{
if(k == ""){
if(m == ""){ // must have a mile measure

alert(e+" not supplied");// error
return -1;
}
else{

if(isNaN(m) || m < 0.1 || m > 100){
alert(e+" (Miles) not numeric or not in range .1 to 100");
return -1;
}
tm = parseFloat(m);
return (tm * mtk);
}
}
else{
if(isNaN(k) || k < 0.1 || k > 160){
alert(e+" (Km) not numeric or not in range .1 to 160");
return -1;
}
return parseFloat(k);
}
}
function check_m(u_km, u_miles, err) // returns MILES
{
if(u_km == "")
{
// must be miles
d = parseFloat(u_miles);
if(isNaN(d) || d < 0.1 || d > 100)
{
window.alert(err+" range is .1 to 100 MILES");
return("Error");
}
}
else
{
d = parseFloat(u_km);
if(isNaN(d) || d < 0.1 || d > 160)
{
window.alert("Distance range is .1 to 160 KM");
return("Error");
}
d = d * ktm;
}
return(d);
}

// W3C DOM'ish
function check_int(num, lo, hi, def, err)
{
if(num == "" && def != "")
{
return def; // just return default
}

tn = parseInt(num);
if(isNaN(tn) || tn < lo || tn > hi)
{
alert(err+" must be in range "+lo+" to "+hi);
return("Error");
}
return tn;
}
function fres_zone()
{
// note: uses explicit names in form which must be unique on page
if((tl = check_km(document.getElementById("fltk").value,document.getElementById("fltm").value,"Total Link distance")) == -1)
{
return;
}
// tl valid numeric in Km check for obstacle - if not present = link/2
tok = document.getElementById("flok").value;
tom = document.getElementById("flom").value;
if (tok == "" && tom == ""){
// default in km link/2
if (document.getElementById("fltk").value != ""){
document.getElementById("flok").value = round(tl/2,3);
}else{
document.getElementById("flom").value = round((tl/2)*ktm,3);
}
}
if((d1 = check_km(document.getElementById("flok").value, document.getElementById("flom").value, "Obstacle Distance")) == -1)
{
return;
}
d2 = tl - d1;
// check frequency present and numeric
flf = document.getElementById("flf").value;
if(flf == "")
{
alert("Frequency not specified");
return;
}
if(isNaN(flf ))
{
alert("Frequency not numeric");
return;
}
freq = parseFloat(flf);

freq = freq /1000; // in GHz
// fresnel and obstacle free zone
flrm = Math.round(17.3 * Math.sqrt((d1 * d2)/(freq * tl)));
document.getElementById("flzm").value = flrm;
document.getElementById("flzf").value = Math.round(flrm * ftm);
document.getElementById("fld1k").value = round(d1,3);
document.getElementById("fld1m").value = round(d1 * ktm,3);
// 0.6 fresnel
flr6m = round(flrm *0.6,3);
document.getElementById("flofm").value = flr6m;
document.getElementById("floff").value = Math.round((flr6m * ftm),3);
// earth's height at mid point
ehm = (Math.pow(tl,2)/(8*((4*6378)/3))) * 1000;
document.getElementById("flehm").value = round(ehm,3);
document.getElementById("flehf").value = round(ehm * ftm,3);
}

function power_budget()
{
if((dbm = check_dbm(document.getElementById("bdbm").value, document.getElementById("bmw").value)) == "Error")
{
return ("Error");
}
// antenna
if((db = check_int(document.getElementById("bag").value,1,100, "", "Antenna Gain")) == "Error"){
return "Error";
}
// result for gains
radan_tot = dbm + db;
document.getElementById("brr").value = round(dbm + db,3);

if(document.getElementById("blf").value != "" || document.getElementById("blm").value != "")
{
// handle cable loss
// we have a cable parameter normalise to meters
if(document.getElementById("bcf").value != "")
{
// user supplied feet
cable_loss = parseFloat(document.getElementById("bcf").value);
if(isNaN(cable_loss))
{
window.alert("Cable loss not numeric");
return("Error");
}
cable_loss = cable_loss * ftm;
}
else
{
cable_loss = parseFloat(document.getElementById("bcm").value);
if(isNaN(cable_loss))
{
window.alert("Cable loss not numeric");
return("Error");
}
}
if(document.getElementById("blf").value != "")
{
// user supplied feet
cable_length = parseFloat(document.getElementById("blf").value);
if(isNaN(cable_length))
{
window.alert("Cable length not numeric");
return("Error");
}
cable_length = cable_length * mtf;
}
else
{
cable_length = parseFloat(document.getElementById("blm").value);
if(isNaN(cable_length))
{
window.alert("Cable length not numeric");
return("Error");
}
}
// normalise cable loss
cable_tot = round((cable_loss /100) * cable_length,3);
document.getElementById("bcr").value = cable_tot;
}
else
{
cable_tot = 0;
document.getElementById("bcr").value = "0";
}

// handle connectors
if(document.getElementById("bconno").value != "")
{
// handle connector loss
f = parseFloat(document.getElementById("bconf").value);
if ((isNaN(f)) || (f < 100) || (f > 25000))
{
window.alert("Frequency range 100 to 25,000 MHz");
return("Error");
}
f = f /1000; //frequency in GHz
num_con = parseInt(document.getElementById("bconno").value);
if (isNaN(num_con))
{
window.alert("Number of connectors not numeric");
return("Error");
}
// max. loss = 0.10 * sqrt(freq)
con_tot = round(num_con * (0.1 * Math.sqrt(f)),3);
document.getElementById("bconr").value = con_tot;
}
else
{
con_tot = 0;
document.getElementById("bconr").value = "0";
}
document.getElementById("btr").value = round(radan_tot - con_tot - cable_tot,3);
}

function op_margin()
{
//calculate various operating margins or antenna gains or distance
want_dis = 0;
want_tan = 0;
want_ran = 0;
if((sad = check_int(document.getElementById("spomsad").value, 1, 100, 30, "SAD factor")) == "Error"){
return "Error";
}
sad = sad/100;
if(document.getElementById("spk").value == "" && document.getElementById("spm").value == ""){
want_dis = 1; // no distance - solve for distance only
}
else
{
if((d = check_m(document.getElementById("spk").value, document.getElementById("spm").value, "Distance")) == "Error")
{
return("Error");
}
}
// must always have valid frequency
f = parseFloat(document.getElementById("spf").value);
if(isNaN(f) || f < 100 || f > 60000)
{
window.alert("Frequency range is 100 to 60,000 MHz");
return("Error");
}
f = log10(f) / log10(10);
if(!want_dis)
{
d = log10(d) / log10(10);
fs_loss = round((20 * f) + (20 * d) + 36.56,3);
}
// calculate tx power
// confirm TX antenna gain
if (document.getElementById("sptxa").value == "" && want_dis)
{
window.alert("Cannot solve for distance and TX antenna gain");
return("Error");
}
else
{
if (document.getElementById("sptxa").value == "")
{
want_tan = 1; // solve for tx gain
tx_an = 0; // temp
}
else
{
tx_an = parseFloat(document.getElementById("sptxa").value);
}
}
if(isNaN(tx_an) || tx_an < 0 || tx_an > 100)
{
alert("Antenna gain range 0 to 100");
return("Error");
}
// check radio power
if((tx_dbm = check_dbm(document.getElementById("sptxdbm").value, document.getElementById("sptxmw").value)) == "Error")
{
return("Error");
}
// if cable loss invalid substitute 0
tx_cable = parseFloat(document.getElementById("sptxc").value);
if (isNaN(tx_cable))
{
tx_cable = 0;
document.getElementById("sptxc").value = 0;
}
tx_budget = tx_an + tx_dbm - tx_cable;
// calculate rx power
// confirm RX antenna gain
if (document.getElementById("sprxa").value == "" && want_dis)
{
window.alert("Cannot solve for distance and RX antenna gain");
return("Error");
}
else
{
if (document.getElementById("sprxa").value == "")
{
want_ran = 1; // solve for rx gain
rx_an = 0;
}
else
{
rx_an = parseFloat(document.getElementById("sprxa").value);
}
}
if(isNaN(rx_an) || rx_an < 0 || rx_an > 100)
{
window.alert("Antenna gain range 0 to 100");
return("Error");
}
// check radio power
if((rx_dbm = check_dbm(document.getElementById("sprxdbm").value, "")) == "Error")
{
return("Error");
}
// if cable loss invalid substitute 0
rx_cable = parseFloat(document.getElementById("sprxc").value);
if (isNaN(rx_cable))
{
rx_cable = 0;
document.getElementById("sprxc").value = 0;
}
rx_budget = rx_an - rx_dbm - rx_cable;

// got everything we might need - figure out what to do
if(!want_dis && !want_tan && !want_ran)
{
// straight calculation of margins
document.getElementById("sprxr").value = round(rx_budget,3);
document.getElementById("sptxr").value = round(tx_budget,3);
document.getElementById("spfr").value = fs_loss;
margin = tx_budget - fs_loss + rx_budget;
document.getElementById("spomr").value = round(margin,3);
document.getElementById("spomrx").value = round(margin + rx_dbm,3);
document.getElementById("spomsad").value = round(((margin/tx_budget) * 100),3);
}
else
{
if (want_dis)
{
// solve for distance
document.getElementById("sprxr").value = round(rx_budget,3);
document.getElementById("sptxr").value = round(tx_budget,3);
// reduce tx_budget by SAD
tx_budget = tx_budget - (tx_budget * sad);
fs_loss = tx_budget + rx_budget;
// now solve fs equation for distance
// 20*log10d(in miles) = 36.56 + (RX sensitivity + TX budget) + 20*log10(freq)
alert("Solve for distance not currently operational - sorry");
return("Error");
}
else
{
document.getElementById("spfr").value = fs_loss;
temp_budget = tx_budget - (tx_budget * sad);
gain = Math.ceil(fs_loss - (temp_budget + rx_budget));
if(gain < 0){
gain = 0;
}
// round gain up
if(want_tan && want_ran){
// solve for two antenna (symetric)
gain = Math.ceil(gain /2);
document.getElementById("sptxa").value = gain;
document.getElementById("sprxa").value = gain;
tx_budget = tx_dbm - tx_cable + gain;
rx_budget = gain - rx_dbm - rx_cable;
}else{
// solve for one antenna
if(want_tan){
document.getElementById("sptxa").value = gain;
tx_budget = tx_dbm - tx_cable + gain;
}else{
document.getElementById("sprxa").value = gain;
rx_budget = gain - rx_dbm - rx_cable;
}
}
document.getElementById("sprxr").value = round(rx_budget,3);
document.getElementById("sptxr").value = round(tx_budget,3);
document.getElementById("spfr").value = fs_loss;
margin = tx_budget - fs_loss + rx_budget;
document.getElementById("spomr").value = round(margin,3);
document.getElementById("spomrx").value = round(margin + rx_dbm,3);
if(document.getElementById("spomsad").value == ""){
document.getElementById("spomsad").value = Math.ceil(sad * 100);
}
}
}
}

//-->
</script>
0
Réponse 2 / 4
Sacabouffe Messages postés 9427 Date d'inscription dimanche 19 août 2007 Statut Membre Dernière intervention 29 mai 2009 1 832
21 oct. 2008 à 14:58
Ah ouais, il y en a un bon pavé.
Je vois ça plus tard.
T'as qu'à envoyer ce que t'as déjà fait en attendant.
0
Réponse 3 / 4
Sacabouffe Messages postés 9427 Date d'inscription dimanche 19 août 2007 Statut Membre Dernière intervention 29 mai 2009 1 832
22 oct. 2008 à 22:54
Si tu me montres pas ce que t'as fait et où t'as des soucis, je vois mal comment je vais pouvoir t'aider.
0
Réponse 4 / 4
Sacabouffe Messages postés 9427 Date d'inscription dimanche 19 août 2007 Statut Membre Dernière intervention 29 mai 2009 1 832
21 oct. 2008 à 11:35
Salut
Sans le programme, ça va être dur de convertir quoi que ce soit :-D
Bonne journée
-2

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