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js_rnd_demo.js
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js_rnd_demo.js
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/*
------------- js_chart demo random data routines ----------------
(c) 2019 SpeedBit, reg. Czestochowa, Poland
--------------------------------------------------------------------
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
// ------------------------- demo data start -------------------------
//////////////////////////////////////////////////////////////////////
//
// auxiliary functions only for generating random data for chart testing
//
//////////////////////////////////////////////////////////////////////
var debugstr = "";
function debug(s) {
debugstr += s + " | ";
var dt = document.getElementById("debug"); if (dt) dt.textContent=debugstr;
}
function debug1(s) {
var dt = document.getElementById("debug1"); if (dt) dt.textContent=s;
}
function debug2(s) {
var dt = document.getElementById("debug2"); if (dt) dt.textContent=s;
}
var data_1 = [];
var data_2 = [];
var data_3 = [];
var data_4 = [];
var data_5 = [];
var demostyle= [];
var demodata = [];
var demodesc = [];
let demolength = 30; // -1 for random data length
function set_random_data_array(array) {
const maxdatalength = 30; // maximum legth of demo data array if random length
let differentsize = true; // each data array has different size (datalength)
const maxdatavalue = -0.0000000000661; // maximum value of demo data
const mindatavalue = -0.0000001; // minimum value of demo data
const offsetedatavalue= -0.0000000048; // offset value of demo data
const randomdeletedata= true; // delete random data
let numberofdelete = 3; // the amount of deletion of data
const insertnulldata = true; // enter null for random data
let numberofinserts = 3; // number of null entries
array.splice(0, array.length);
// demo data length
if ((demolength==-1) || (differentsize) ) demolength = Math.round(Math.random() * maxdatalength);
// random data values
for (let i = 0; i < demolength; i++) {
let r=Math.random() * maxdatavalue;
if (Math.random() > 0.5) r= Math.random() * mindatavalue;
r += offsetedatavalue;
array.push(r);
}
// insert null data - for test
if (insertnulldata) {
if (numberofinserts > demolength) numberofinserts = demolength;
for (let i = 0; i < numberofinserts; i++) {
let ind = Math.round(Math.random() * (demolength - 1));
array[ind] = null;
}
}
// random delete data - for test
if (randomdeletedata) {
if (numberofdelete > demolength) numberofdelete = demolength;
for (let i = 0; i < numberofdelete; i++) {
let ind = Math.round(Math.random() * (demolength - 1));
delete array[ind];
}
}
}
function getRndRGBColor(alpha) {
if (typeof alpha != "undefined")
return ("rgba(" + Math.round(Math.random()*255) + "," + Math.round(Math.random()*255) + "," + Math.round(Math.random()*255) + "," + alpha + ")");
else
return ("rgb(" + Math.round(Math.random()*255) + "," + Math.round(Math.random()*255) + "," + Math.round(Math.random()*255) + ")");
}
function changeRGBAalpha(rgba, alpha) {
if (typeof rgba == "undefined") return rgba;
if ( !rgba.includes("rgba") ) return rgba;
let str = rgba.split(",");
str[3] = alpha + ")";
return str[0] + "," + str[1] + "," + str[2] + "," + str[3];
}
function generate_random_data() {
set_random_data_array(data_1);
set_random_data_array(data_2);
set_random_data_array(data_3);
set_random_data_array(data_4);
set_random_data_array(data_5);
c1a = getRndRGBColor(1); c1b = changeRGBAalpha(c1a, 0.7); c1c = changeRGBAalpha(c1a , 0.5); Math.random();
c2a = getRndRGBColor(1); c2b = changeRGBAalpha(c2a, 0.7); c2c = changeRGBAalpha(c2a , 0.5); Math.random();
c3a = getRndRGBColor(1); c3b = changeRGBAalpha(c3a, 0.7); c3c = changeRGBAalpha(c3a , 0.5); Math.random();
c4a = getRndRGBColor(1); c4b = changeRGBAalpha(c4a, 0.7); c4c = changeRGBAalpha(c4a , 0.5); Math.random();
c5a = getRndRGBColor(1); c5b = changeRGBAalpha(c5a, 0.7); c5c = changeRGBAalpha(c5a , 0.5); Math.random();
c6a = getRndRGBColor(1); c6b = changeRGBAalpha(c6a, 0.7); c6c = changeRGBAalpha(c6a , 0.5); Math.random();
c7a = getRndRGBColor(1); c7b = changeRGBAalpha(c7a, 0.7); c7c = changeRGBAalpha(c7a , 0.5); Math.random();
c8a = getRndRGBColor(1); c8b = changeRGBAalpha(c8a, 0.7); c8c = changeRGBAalpha(c8a , 0.5); Math.random();
c9a = getRndRGBColor(1); c9b = changeRGBAalpha(c9a, 0.7); c9c = changeRGBAalpha(c9a , 0.5); Math.random();
c10a = getRndRGBColor(1); c10b = changeRGBAalpha(c10a, 0.7); c10c = changeRGBAalpha(c10a, 0.5); Math.random();
c11a = getRndRGBColor(1); c11b = changeRGBAalpha(c11a, 0.7); c11c = changeRGBAalpha(c11a, 0.5); Math.random();
c12a = getRndRGBColor(1); c12b = changeRGBAalpha(c12a, 0.7); c12c = changeRGBAalpha(c12a, 0.5); Math.random();
bar_st_1 =["type=bar" , "linecolor=" + c1a, "fillcolor=" + c1b, "linewidth=1", "points=false", "pointsize=5", "pointcolor=" + c1c ];
bar_st_2 =["type=bar" , "linecolor=" + c2a, "fillcolor=" + c2b, "linewidth=1", "points=false", "pointsize=5", "pointcolor=" + c2c ];
bar_st_3 =["type=bar" , "linecolor=" + c3a, "fillcolor=" + c3b, "linewidth=1", "points=false", "pointsize=5", "pointcolor=" + c3c ];
bar_st_4 =["type=bar" , "linecolor=" + c4a, "fillcolor=" + c4b, "linewidth=1", "points=true" , "pointsize=5", "pointcolor=" + c4c ];
area_st_1=["type=area", "linecolor=" + c5a, "fillcolor=" + c5b, "linewidth=1", "points=false", "pointsize=5", "pointcolor=" + c5c, "beziercurve=true" ];
area_st_2=["type=area", "linecolor=" + c6a, "fillcolor=" + c6b, "linewidth=2", "points=false", "pointsize=5", "pointcolor=" + c6c, "beziercurve=true" ];
area_st_3=["type=area", "linecolor=" + c7a, "fillcolor=" + c7b, "linewidth=1", "points=false", "pointsize=5", "pointcolor=" + c7c, "beziercurve=true" ];
area_st_4=["type=area", "linecolor=" + c8a, "fillcolor=" + c8b, "linewidth=2", "points=true", "pointsize=5", "pointcolor=" + c8c, "beziercurve=true" ];
line_st_1=["type=line", "linecolor=" + c9a , "linewidth=2", "points=false", "pointsize=5", "pointcolor=" + c9c , "beziercurve=true"];
line_st_2=["type=line", "linecolor=" + c10a, "linewidth=2", "points=false", "pointsize=5", "pointcolor=" + c10c, "beziercurve=true"];
line_st_3=["type=line", "linecolor=" + c11a, "linewidth=2", "points=false", "pointsize=5", "pointcolor=" + c11c, "beziercurve=true"];
line_st_4=["type=line", "linecolor=" + c12a, "linewidth=2", "points=true" , "pointsize=5", "pointcolor=" + c12c, "beziercurve=true"];
line_style=["type=" + "line",
"linecolor=" + "rgba(255, 250, 0, 1.0)",
"linewidth=" + "1" ,
"points=" + "false",
"pointsize=" + "5",
"pointcolor=" + "rgba(255, 250, 0, 0.6)",
"beziercurve=" + "true",
"beziercnst=" + "3" ];
bar_style = ["type=" + "bar",
"linecolor=" + "rgba(0, 255, 250, 1.0)",
"fillcolor=" + "rgba(0, 255, 250, 0.6)",
"linewidth=" + "1",
"points=" + "false",
"pointsize=" + "5",
"pointcolor=" + "rgba(0, 255, 250, 0.3)"];
area_style=["type=" + "area",
"linecolor=" + "rgba(250, 0, 250, 1.0)",
"fillcolor=" + "rgba(250, 0, 250, 0.6)",
"linewidth=" + "1",
"points=" + "false",
"pointsize=" + "5",
"pointcolor=" + "rgba(250, 0, 250, 0.3)",
"beziercurve=" + "true",
"beziercnst=" + "3" ];
//style = [bar_st_1, area_st_2, area_st_3, area_st_4, line_st_1, line_st_2];
//data = [data_1 , data_2 , data_3 , data_4 , data_5 , data_6 ];
allStyle = [bar_st_1, area_st_1, line_st_1, bar_st_2, area_st_2, line_st_2, bar_st_3, area_st_3, line_st_3, bar_st_4, area_st_4, line_st_4];
//allStyle = [bar_st_1, bar_st_2, bar_st_3, bar_st_4, bar_st_1, bar_st_2, bar_st_3, bar_st_4, bar_st_1, bar_st_2, bar_st_3, bar_st_4];
function rndStyle() { return allStyle[Math.round(Math.random() * (allStyle.length-1))].slice(); }
demostyle = [rndStyle(), rndStyle(), rndStyle(), rndStyle(), rndStyle(), rndStyle()];
//demostyle = [bar_st_1, bar_st_2, bar_st_3];
demodata = [data_1, data_2, data_3, data_4, data_5];
//demodata = [data_1];
let tl = Math.round(Math.random() * (demodata.length) ) + 1; // if +x then the demodata will accidentally contain a x non-existent data series - for test ;-)
//if (tl == 0) tl = 1; // if we want to always have at least one data series
demodata.length = tl;
demodesc.length= 0;
// time demo description of X-axis (the value may be incorrect - it's only for demo & test)
for (let i = 0; i < demolength; i++) {
m = (i * 15 % 60).toString();
if (m == "0") m = "00";
h = (Math.floor(i / 4) % 60).toString();
demodesc.push("0" + h + ":" + m);
}
}
// ------------------------- end of demo data -------------------------