Routh stability calculator algorithm in javascript
up vote
1
down vote
favorite
Im trying to write algorithm for routh stability criterion, I load inputs into array then I try to calculate other values with algorithm. But Im struggling with that algorithm
this is what I have right now:
function parse() {
var str = document.getElementById("input").value;
var n = str.split(/[-+]/).length;
console.log(n);
var x = ;
x = str.split(/[-+]/);
var a = ;
for (var i = 0; i <= n - 1; i++) {
if (x[i].charAt(0) == "s") {
a[i] = 1;
} else {
a[i] = Number(x[i].charAt(0));
}
}
i = 0;
console.log(a[0]);
console.log(a[1]);
console.log(a[2]);
console.log(a[3]);
var k = ;
k[0] = a[0] / a[1];
var b = ;
for (i; i < n - 2; i++) {
b[i] = a[i + 2] - (k[i] * a[i + 3]); // a[i+3] is undefined
k[i + 1] = a[i + 1] / b[i];
console.log(b[0]);
console.log(b[1]);
console.log(k[0]);
console.log(k[1]);
}
}<input type="text" name="input" id="input">
<button onclick="parse()">calculate</button>Values in blue I have and values in red I need, I dont know how to define when there is no more values in array to calculate next line.
routh criterion
javascript arrays math
edited Nov 11 at 15:22
Ele
22.6k42044
asked Nov 11 at 15:21
Thomas231
63
add a comment |
up vote
1
down vote
favorite
Im trying to write algorithm for routh stability criterion, I load inputs into array then I try to calculate other values with algorithm. But Im struggling with that algorithm
this is what I have right now:
function parse() {
var str = document.getElementById("input").value;
var n = str.split(/[-+]/).length;
console.log(n);
var x = ;
x = str.split(/[-+]/);
var a = ;
for (var i = 0; i <= n - 1; i++) {
if (x[i].charAt(0) == "s") {
a[i] = 1;
} else {
a[i] = Number(x[i].charAt(0));
}
}
i = 0;
console.log(a[0]);
console.log(a[1]);
console.log(a[2]);
console.log(a[3]);
var k = ;
k[0] = a[0] / a[1];
var b = ;
for (i; i < n - 2; i++) {
b[i] = a[i + 2] - (k[i] * a[i + 3]); // a[i+3] is undefined
k[i + 1] = a[i + 1] / b[i];
console.log(b[0]);
console.log(b[1]);
console.log(k[0]);
console.log(k[1]);
}
}<input type="text" name="input" id="input">
<button onclick="parse()">calculate</button>Values in blue I have and values in red I need, I dont know how to define when there is no more values in array to calculate next line.
routh criterion
javascript arrays math
edited Nov 11 at 15:22
Ele
22.6k42044
asked Nov 11 at 15:21
Thomas231
63
my input looks like this: s^3+4s^2+4s+8
– Thomas231
Nov 11 at 15:23
add a comment |
up vote
1
down vote
favorite
up vote
1
down vote
favorite
Im trying to write algorithm for routh stability criterion, I load inputs into array then I try to calculate other values with algorithm. But Im struggling with that algorithm
this is what I have right now:
function parse() {
var str = document.getElementById("input").value;
var n = str.split(/[-+]/).length;
console.log(n);
var x = ;
x = str.split(/[-+]/);
var a = ;
for (var i = 0; i <= n - 1; i++) {
if (x[i].charAt(0) == "s") {
a[i] = 1;
} else {
a[i] = Number(x[i].charAt(0));
}
}
i = 0;
console.log(a[0]);
console.log(a[1]);
console.log(a[2]);
console.log(a[3]);
var k = ;
k[0] = a[0] / a[1];
var b = ;
for (i; i < n - 2; i++) {
b[i] = a[i + 2] - (k[i] * a[i + 3]); // a[i+3] is undefined
k[i + 1] = a[i + 1] / b[i];
console.log(b[0]);
console.log(b[1]);
console.log(k[0]);
console.log(k[1]);
}
}<input type="text" name="input" id="input">
<button onclick="parse()">calculate</button>Values in blue I have and values in red I need, I dont know how to define when there is no more values in array to calculate next line.
routh criterion
javascript arrays math
edited Nov 11 at 15:22
Ele
22.6k42044
asked Nov 11 at 15:21
Thomas231
63
Im trying to write algorithm for routh stability criterion, I load inputs into array then I try to calculate other values with algorithm. But Im struggling with that algorithm
this is what I have right now:
function parse() {
var str = document.getElementById("input").value;
var n = str.split(/[-+]/).length;
console.log(n);
var x = ;
x = str.split(/[-+]/);
var a = ;
for (var i = 0; i <= n - 1; i++) {
if (x[i].charAt(0) == "s") {
a[i] = 1;
} else {
a[i] = Number(x[i].charAt(0));
}
}
i = 0;
console.log(a[0]);
console.log(a[1]);
console.log(a[2]);
console.log(a[3]);
var k = ;
k[0] = a[0] / a[1];
var b = ;
for (i; i < n - 2; i++) {
b[i] = a[i + 2] - (k[i] * a[i + 3]); // a[i+3] is undefined
k[i + 1] = a[i + 1] / b[i];
console.log(b[0]);
console.log(b[1]);
console.log(k[0]);
console.log(k[1]);
}
}<input type="text" name="input" id="input">
<button onclick="parse()">calculate</button>Values in blue I have and values in red I need, I dont know how to define when there is no more values in array to calculate next line.
routh criterion
function parse() {
var str = document.getElementById("input").value;
var n = str.split(/[-+]/).length;
console.log(n);
var x = ;
x = str.split(/[-+]/);
var a = ;
for (var i = 0; i <= n - 1; i++) {
if (x[i].charAt(0) == "s") {
a[i] = 1;
} else {
a[i] = Number(x[i].charAt(0));
}
}
i = 0;
console.log(a[0]);
console.log(a[1]);
console.log(a[2]);
console.log(a[3]);
var k = ;
k[0] = a[0] / a[1];
var b = ;
for (i; i < n - 2; i++) {
b[i] = a[i + 2] - (k[i] * a[i + 3]); // a[i+3] is undefined
k[i + 1] = a[i + 1] / b[i];
console.log(b[0]);
console.log(b[1]);
console.log(k[0]);
console.log(k[1]);
}
}<input type="text" name="input" id="input">
<button onclick="parse()">calculate</button>function parse() {
var str = document.getElementById("input").value;
var n = str.split(/[-+]/).length;
console.log(n);
var x = ;
x = str.split(/[-+]/);
var a = ;
for (var i = 0; i <= n - 1; i++) {
if (x[i].charAt(0) == "s") {
a[i] = 1;
} else {
a[i] = Number(x[i].charAt(0));
}
}
i = 0;
console.log(a[0]);
console.log(a[1]);
console.log(a[2]);
console.log(a[3]);
var k = ;
k[0] = a[0] / a[1];
var b = ;
for (i; i < n - 2; i++) {
b[i] = a[i + 2] - (k[i] * a[i + 3]); // a[i+3] is undefined
k[i + 1] = a[i + 1] / b[i];
console.log(b[0]);
console.log(b[1]);
console.log(k[0]);
console.log(k[1]);
}
}<input type="text" name="input" id="input">
<button onclick="parse()">calculate</button>javascript arrays math
javascript arrays math
edited Nov 11 at 15:22
Ele
22.6k42044
asked Nov 11 at 15:21
Thomas231
63
edited Nov 11 at 15:22
Ele
22.6k42044
asked Nov 11 at 15:21
Thomas231
63
edited Nov 11 at 15:22
Ele
22.6k42044
edited Nov 11 at 15:22
Ele
22.6k42044
edited Nov 11 at 15:22
Ele
22.6k42044
22.6k42044
asked Nov 11 at 15:21
Thomas231
63
asked Nov 11 at 15:21
Thomas231
63
asked Nov 11 at 15:21
Thomas231
63
63
my input looks like this: s^3+4s^2+4s+8
– Thomas231
Nov 11 at 15:23
add a comment |
my input looks like this: s^3+4s^2+4s+8
– Thomas231
Nov 11 at 15:23
my input looks like this: s^3+4s^2+4s+8
– Thomas231
Nov 11 at 15:23
my input looks like this: s^3+4s^2+4s+8
– Thomas231
Nov 11 at 15:23
add a comment |
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my input looks like this: s^3+4s^2+4s+8
– Thomas231
Nov 11 at 15:23