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The column bar is too small. And I couldn't adjust their height. The screen shot is attached here: https://prnt.sc/p09hj9.
I have tried all the methods of column series at https://www.amcharts.com/docs/v4/reference/columnseries/.
am4core.ready(function() {
// Create chart instance
var chart = am4core.create("historical_monthly_chart_range", am4charts.XYChart);
// Push data into the charts
var dateAxis = chart.xAxes.push(new am4charts.DateAxis());
var valueAxis = chart.yAxes.push(new am4charts.ValueAxis());
var series = chart.series.push(new am4charts.LineSeries());
series.name = "Price Range";
valueAxis.title.text = 'Price (S$ psf)';
series.dataFields.dateX = "date";
series.dataFields.openValueY = "min";
series.dataFields.valueY = "max";
series.tooltipText = "{date} \n Maximum: {max} \n Average: {average} \n Minimum: {min} \n Volume: {value}";
// Setting the appearance
series.tooltip.background.cornerRadius = 20;
series.tooltip.background.strokeOpacity = 0;
series.tooltip.pointerOrientation = "vertical";
series.tooltip.label.minWidth = 40;
series.tooltip.label.minHeight = 40;
series.tooltip.label.textAlign = "left";
series.tooltip.label.textValign = "middle";
series.fillOpacity = 0.5;
series.tensionX = 0.8;
series.fill = am4core.color("#697e69");
var series2 = chart.series.push(new am4charts.LineSeries());
series2.name = "Minimum Price";
series2.dataFields.dateX = "date";
series2.dataFields.valueY = "min";
series2.stroke = am4core.color("#697e69");
series2.tensionX = 0.8;
var series_average = chart.series.push(new am4charts.LineSeries());
series_average.name = "Average Price";
series_average.dataFields.valueY = "average";
series_average.dataFields.dateX = "date";
series_average.stroke = am4core.color("#000");
/* Bar chart series */
var barSeries = chart.series.push(new am4charts.ColumnSeries());
barSeries.dataFields.valueY = "value";
barSeries.dataFields.dateX = "date";
barSeries.fill = am4core.color("#000");
barSeries.columns.width = am4core.percent(60);
chart.cursor = new am4charts.XYCursor();
chart.cursor.xAxis = dateAxis;
chart.legend = new am4charts.Legend();
});
There is a bounty on this issue from AM charts however one workaround can be using scrollbar in Y axis like this following:
chart.scrollbarY = new am4core.Scrollbar();
This is not the best solution i agree but you can use it to slightly zoom with the buttons and scale and see
let me know if it works!
I am trying to implement a drill in or drill down in a pie chart. I actually have a working drill down pie chart, however, when I changed the values of the collection, it did not work. I am wondering what went wrong as I completely followed the working code and just replaced its values. The chart simply does not show up and has an error: Uncaught Error: Unknown header type: 17format+en,default+en,ui+en,controls+en,corechart+en.I.js:191. I am not sure though whether this error is related to the problem.
Javascript:
google.load('visualization', '1', {packages: ['corechart', 'controls']});
google.setOnLoadCallback(drawChart1);
var index = 0;
function drawChart1() {
<%
int aku = 0, cdu = 0, ls = 0, ptr = 0, rad = 0, oper = 0;
int aku1 = 0, aku2 = 0, aku3 = 0, aku4 = 0, aku5 = 0;
int cdu1 = 0, cdu2 = 0, cdu3 = 0, cdu4 = 0, cdu5 = 0, cdu6 = 0;
int ls1 = 0, ls2 = 0, ls3 = 0, ls4 = 0, ls5 = 0, ls6 = 0, ls7 = 0, ls8 = 0, ls9 = 0, ls10 = 0;
int ptr1 = 0, ptr2 = 0, ptr3 = 0, ptr4 = 0;
int rad1 = 0, rad2 = 0, rad3 = 0;
int oper1 = 0;
%> //Dummy values
//Main
var main = [
['Artificial Kidney Unit', <%=aku%>],
['Cardiac Diagnostic Unit', <%=cdu%>],
['Laboratory Services', <%=ls%>],
['Physical Therapy and Rehabilitation', <%=ptr%>],
['Radiology', <%=rad%>],
['Operations', <%=oper%>]
];
//Aku
var akuu = [
['Hemodialysis', <%=aku1%>],
['Peritoneal Dialysis', <%=aku2%>],
['Continuous Renal Replacement Therapy', <%=aku3%>],
['Sustained Low Efficient Dialysis', <%=aku4%>],
['Private Dialysis Suite', <%=aku5%>]
];
//Cdu
var cduu = [
['Electrocardiography', <%=cdu1%>],
['Ambulatory Electrocardiography', <%=cdu2%>],
['Exercise Stress Test', <%=cdu3%>],
['2D Echo', <%=cdu4%>],
['Lower Extremity Arterial & Venous Color Duplex Scan', <%=cdu5%>],
['Carotid Artery Duplex Scan', <%=cdu6%>]
];
//Ls
var lss = [
['Hematology', <%=ls1%>],
['Blood Chemistry', <%=ls2%>],
['Immunology and Serology', <%=ls3%>],
['Clinical Microscopy', <%=ls4%>],
['Microbiology', <%=ls5%>],
['Blood Bank and Transfusion Services', <%=ls6%>],
['Drug Testing', <%=ls7%>],
['Parasitology', <%=ls8%>],
['Surgical Pathology', <%=ls9%>],
['Cytopathology', <%=ls10%>]
];
//Ptr
var ptrr = [
['Physical Therapy', <%=ptr1%>],
['Occupational Therapy', <%=ptr2%>],
['Ultrasound Diagnostic Therapy', <%=ptr3%>],
['Orthotics and Prosthetic Evaluation', <%=ptr4%>]
];
//rad
var radd = [
['X-ray', <%=rad1%>],
['Ultrasound', <%=rad2%>],
['CT Scan', <%=rad3%>]
];
//oper
var operr = [
['Surgery', <%=oper1%>]
];
var collection = [];
collection[0] = google.visualization.arrayToDataTable(main);
collection[1] = google.visualization.arrayToDataTable(akuu);
collection[2] = google.visualization.arrayToDataTable(cduu);
collection[3] = google.visualization.arrayToDataTable(lss);
collection[4] = google.visualization.arrayToDataTable(ptrr);
collection[5] = google.visualization.arrayToDataTable(radd);
collection[6] = google.visualization.arrayToDataTable(operr);
var options1 = {
title: 'Departments',
animation: {'duration': 500,
'easing': 'in'},
action: function() {
button.onclick = function() {
recreateDashboard(0);
};
}
};
var chart1 = new google.visualization.PieChart(document.getElementById('chart1'));
google.visualization.events.addListener(chart1, 'select', drillIn);
google.visualization.events.addListener(chart1, 'click', drillOut);
chart1.draw(collection[0], options1);
function drillIn() {
var sel = chart1.getSelection();
var row = chart1.getSelection()[0].row;
options1['title'] = collection[index].getValue(sel[0].row, 0);
if(index === 0) {
if(row === 0) {
index = 1;
}
if(row === 1) {
index = 2;
}
if(row === 2) {
index = 3;
}
if(row === 3) {
index = 4;
}
if(row === 4) {
index = 5;
}
if(row === 5) {
index = 6;
}
}
else if(index === 1 || index === 2 || index === 3 || index === 4 || index === 5 || index === 6) {
options1['title'] = '# of services rendered in <%=year%>';
index = 0;
}
chart1.draw(collection[index], options1);
}
function drillOut(e) {
if(e.targetID === "title") {
if(index !== 0)
index--;
else if(index === 4 || index === 6 || index === 8)
index -= 2;
chart1.draw(collection[index], options1);
}
}
Html:
<div id="chart1">
</div>
I have figured out the mistake. All of these need a title before inputting the values.
Revised code:
//Main
var main = [
['Department', 'Value'],
['Cardiac Diagnostic Unit', <%=cdu%>],
['Laboratory Services', <%=ls%>],
['Physical Therapy and Rehabilitation', <%=ptr%>],
['Radiology', <%=rad%>],
['Operations', <%=oper%>]
];
//Aku
var akuu = [
['Service', 'Value'],
['Hemodialysis', <%=aku1%>],
['Peritoneal Dialysis', <%=aku2%>],
['Continuous Renal Replacement Therapy', <%=aku3%>],
['Sustained Low Efficient Dialysis', <%=aku4%>],
['Private Dialysis Suite', <%=aku5%>]
];
//Cdu
var cduu = [
['Service', 'Value'],
['Electrocardiography', <%=cdu1%>],
['Ambulatory Electrocardiography', <%=cdu2%>],
['Exercise Stress Test', <%=cdu3%>],
['2D Echo', <%=cdu4%>],
['Lower Extremity Arterial & Venous Color Duplex Scan', <%=cdu5%>],
['Carotid Artery Duplex Scan', <%=cdu6%>]
];
//Ls
var lss = [
['Service', 'Value'],
['Hematology', <%=ls1%>],
['Blood Chemistry', <%=ls2%>],
['Immunology and Serology', <%=ls3%>],
['Clinical Microscopy', <%=ls4%>],
['Microbiology', <%=ls5%>],
['Blood Bank and Transfusion Services', <%=ls6%>],
['Drug Testing', <%=ls7%>],
['Parasitology', <%=ls8%>],
['Surgical Pathology', <%=ls9%>],
['Cytopathology', <%=ls10%>]
];
//Ptr
var ptrr = [
['Service', 'Value'],
['Physical Therapy', <%=ptr1%>],
['Occupational Therapy', <%=ptr2%>],
['Ultrasound Diagnostic Therapy', <%=ptr3%>],
['Orthotics and Prosthetic Evaluation', <%=ptr4%>]
];
//rad
var radd = [
['Service', 'Value'],
['X-ray', <%=rad1%>],
['Ultrasound', <%=rad2%>],
['CT Scan', <%=rad3%>]
];
//oper
var operr = [
['Service', 'Value'],
['Surgery', <%=oper1%>]
];
I've have an index.html file that includes a gogglemap.js file to display a map of users location. Currently I am attempting to add the proper code to the index.html to pass the lat, lng info to the js file.
Here is filler content for the index file to show what I am attempting to do:
<h3><display user city></h3> <---- this needs to display users city and has filler text to show what I am trying to accomplish.
<div id="map"></div>
<script>var lat=12.356;var lng=-19.31;var country="User Country";var city="User City";</script> <----- seems like it is getting the lat/lng somehow before the index page loads and inserting this script into the index file?
Here is the js file code:
var styles = [{yourcustomstyle}]
var myLatlng = { lat: lat, lng: lng };
function initialize() {
var mapOptions = {
zoom: 12,
center: myLatlng,
styles: styles,
panControl: false,
zoomControl: false,
mapTypeControl: false,
scaleControl: false,
streetViewControl: false,
overviewMapControl: false
};
var map = new google.maps.Map( document.getElementById('map'), mapOptions );
for (var a = 0; a < 6; a++) {
c = Math.random();
c = c * (0 == 1E6 * c % 2 ? 1 : -1);
d = Math.random()
d = d * (0 == 1E6 * d % 2 ? 1 : -1);
c = new google.maps.LatLng( lat + 0.08 * c + 0.052, lng + 0.2 * d + 0.08),
marker = new google.maps.Marker({
map: map,
position: c,
icon: 'marker.png'
});
}
}
function loadScript() {
var script = document.createElement('script');
script.type = 'text/javascript';
script.src = 'https://maps.googleapis.com/maps/api/js?v=3.exp&callback=initialize';
document.body.appendChild( script );
}
window.onload = loadScript;
I used raphael.js to draw some element's, and now I want to connect them,
how to connect raphael elements with jsplumb ?
For example, in the JSFiddle below : I'm trying to create connections between 2 circles, but I can't, because the circles have no id, my code .
i can't use this :
jsPlumb.connect({source:"id1", target:"id2"})
I finally found a solution to connect raphael elements with jsplumb, I want to thank Mr: # Simon Porritt (jsPlumb creator) for his help: the solution
jsPlumb.ready(function(){
jsPlumb.Defaults.Container = "drawing_board";
// Create a 480 x 640 canvas.
var paper = Raphael('drawing_board');
// of 90 pixels.
var circle1 = paper.circle(140, 110, 90).attr({ fill: '#3D6AA2', stroke: '#000000', 'stroke-width': 8 });
var circle2 = paper.circle(400, 180, 90).attr({ fill: '#3D6AA2', stroke: '#000000', 'stroke-width': 8 });
var rect = paper.rect(50, 280, 90, 70).attr({ fill: '#3D6AA2', stroke: '#000000', 'stroke-width': 8 });
var ellipse = paper.ellipse(300, 420, 90, 70).attr({ fill: '#3D6AA2', stroke: '#000000', 'stroke-width': 8 });
var offsetCalculators = {
"CIRCLE":function(el, parentOffset) {
var cx = parseInt(el.attr("cx"), 10),
cy = parseInt(el.attr("cy"), 10),
r = parseInt(el.attr("r"), 10);
return {
left: parentOffset.left + (cx - r),
top:parentOffset.top + (cy - r)
};
},
"ELLIPSE":function(el, parentOffset) {
var cx = parseInt(el.attr("cx"), 10),
cy = parseInt(el.attr("cy"), 10),
rx = parseInt(el.attr("rx"), 10),
ry = parseInt(el.attr("ry"), 10);
return {
left: parentOffset.left + (cx - rx),
top:parentOffset.top + (cy - ry)
};
},
"RECT":function(el, parentOffset) {
var x = parseInt(el.attr("x"), 10),
y = parseInt(el.attr("y"), 10);
return {
left: parentOffset.left + x,
top:parentOffset.top + y
};
}
};
var sizeCalculators = {
"CIRCLE":function(el) {
var r = parseInt(el.attr("r"), 10);
return [ r * 2, r * 2 ];
},
"ELLIPSE":function(el) {
var rx = parseInt(el.attr("rx"), 10),
ry = parseInt(el.attr("ry"), 10);
return [ rx * 2, ry * 2 ];
},
"RECT":function(el) {
var w = parseInt(el.attr("width"), 10),
h = parseInt(el.attr("height"), 10);
return [ w, h ];
}
};
jsPlumb.CurrentLibrary.getOffset = function(el) {
el = $(el);
var del = el[0], tn = del.tagName.toUpperCase();
if (offsetCalculators[tn]) {
var so = el.parent().offset();
return offsetCalculators[tn](el, so);
}
else
return el.offset();
};
jsPlumb.CurrentLibrary.getSize = function(el) {
el = $(el);
var del = el[0], tn = del.tagName.toUpperCase();
if (sizeCalculators[tn]) {
return sizeCalculators[tn](el);
}
else
return [ el.outerWidth(), el.outerHeight() ];
};
jsPlumb.connect({source:circle1.node, target:circle2.node, anchor:"Center", connector:"Straight"});
jsPlumb.connect({source:circle1.node, target:rect.node, anchors:["Center", "Top"], connector:"Straight"});
jsPlumb.connect({source:circle2.node, target:ellipse.node, anchor:"Center"});
//raphael draggable
var start = function () {
this.ox = this.attr("cx");
this.oy = this.attr("cy");
},
move = function (dx, dy) {
this.attr({cx: this.ox + dx, cy: this.oy + dy});
jsPlumb.repaint(this.node);
},
up = function () { };
paper.set(circle1, circle2).drag(move, start, up); });
What would be the best way to draw a rectangle or circle for that matter using your mouse ?
I just started looking at raphael and it seems I should use, drag? Or mousedown and mouseup ?
No sure.
I would use mousedown and mouseup events on your canvas/paper. On mouse down you should store the x and y positions of the mousedown, then on mouseup you should use the current mouse positions to calculate width and height.
Here is an example, bear in mind thought that I am using JQuery to calculate the mouse positions (if this is not available for you, then you should find another way to get the mouse offsets)
//global variables
var mouseDownX = 0;
var mouseDownY = 0;
//register events on document load
paper.mousedown(OnMouseDown);
paper.mouseup(OnMouseUp);
function OnMouseDown(e){
var offset = $("#Canvas").offset();//This is JQuery function
mouseDownX = e.pageX - offset.left;
mouseDownY = e.pageY - offset.top;
}
function OnMouseUp(e){
var offset = $("#Canvas").offset();//This is JQuery function
var upX = e.pageX - offset.left;
var upY = e.pageY - offset.top;
var width = upX - mouseDownX;
var height = upY - mouseDownY;
DrawRectangle(mouseDownX, mouseDownY, width, height);
}
function DrawRectangle(x, y, w, h){
var element = paper.rect(x, y, w, h);
element.attr({
fill: "#FFF",
stroke: "#F00"
});
}
Hope that helps
Here's an updated version of fiddle (mentioned in the other article) that works with Raphael 2+ (no paper events).
This fiddle shows how a rectangle is dynamically drawn while you drag the mouse.
var mouseDownX = 0;
var mouseDownY = 0;
var elemClicked;
var rect;
$(document).ready(function() {
var paper = Raphael("d1", 300, 200);
// start, move, and up are the drag functions
start = function() {
// storing original coordinates
this.ox = this.attr("x");
this.oy = this.attr("y");
this.attr({
opacity: 1
});
if (this.attr("y") < 60 && this.attr("x") < 60) this.attr({
fill: "#000"
});
}, move = function(dx, dy) {
// move will be called with dx and dy
if (this.attr("y") > 200 || this.attr("x") > 300) this.attr({
x: this.ox + dx,
y: this.oy + dy
});
else {
nowX = Math.min(300, this.ox + dx);
nowY = Math.min(200, this.oy + dy);
nowX = Math.max(0, nowX);
nowY = Math.max(0, nowY);
this.attr({
x: nowX,
y: nowY
});
if (this.attr("fill") != "#000") this.attr({
fill: "#000"
});
}
}, up = function() {
// restoring state
this.attr({
opacity: .5
});
if (this.attr("y") < 60 && this.attr("x") < 60) this.attr({
fill: "#AEAEAE"
});
};
function DrawRectangle(x, y, w, h) {
var element = paper.rect(x, y, w, h);
element.attr({
fill: "gray",
opacity: .5,
stroke: "#F00"
});
$(element.node).attr('id', 'rct' + x + y);
console.log(element.attr('x'));
element.drag(move, start, up);
element.click(function(e) {
elemClicked = $(element.node).attr('id');
});
return element;
}
$("#bind").click(function(e) {
$('#d1').unbind('mousedown');
$('#d1').unbind('mousemove');
$('#d1').unbind('mouseup');
$("#d1").mousedown(function(e) {
// Prevent text edit cursor while dragging in webkit browsers
e.originalEvent.preventDefault();
var offset = $("#d1").offset();
mouseDownX = e.pageX - offset.left;
mouseDownY = e.pageY - offset.top;
rect = DrawRectangle(mouseDownX, mouseDownY, 0, 0);
$("#d1").mousemove(function(e) {
var offset = $("#d1").offset();
var upX = e.pageX - offset.left;
var upY = e.pageY - offset.top;
var width = upX - mouseDownX;
var height = upY - mouseDownY;
rect.attr( { "width": width > 0 ? width : 0,
"height": height > 0 ? height : 0 } );
});
});
$("#d1").mouseup(function(e) {
$('#d1').unbind('mousemove');
var BBox = rect.getBBox();
if ( BBox.width == 0 && BBox.height == 0 ) rect.remove();
});
});
$("#unbind").click(function(e) {
$('#d1').unbind('mouseup');
$('#d1').unbind('mousemove');
$('#d1').unbind('mousedown');
});
$("#clr").click(function(e) {
$('#d1').find('rect').each(function(i, obj) {
$(this).remove();
});
});
$("#del").click(function(e) {
$('#' + elemClicked).remove();
});
});
I have tried to modify the above fiddle from Miro. Please check my updated version here
var canvas = $('#canvas');
var paper = Raphael(canvas.attr('id'), canvas.width(), canvas.height());
var mouseDownX = 0;
var mouseDownY = 0;
var elemClicked;
var shap;
var borderColor = '#093';
var fillColor = '#eee';
var option = 1;
var shapOpacity = .5;
var ShapType = {RECTANGLE: 1, CIRCLE: 2, LINE: 3}
$(document).ready(function() {
$("#action").change(function() {
option = $('option:selected', this).val();
});
$("#start").click(function(e) {
reset();
$(canvas).mousedown(function(e) {
e.originalEvent.preventDefault();
var offset = $(canvas).offset();
mouseDownX = e.pageX - offset.left;
mouseDownY = e.pageY - offset.top;
if(option == ShapType.RECTANGLE){
shap = drawRectangle(mouseDownX, mouseDownY, 0, 0);
}
else if(option == ShapType.CIRCLE){
shap = drawCircle(mouseDownX, mouseDownY, mouseDownX, mouseDownY);
}else if(option == ShapType.LINE){
shap = drawLine(mouseDownX, mouseDownY, mouseDownX, mouseDownY);
}
$(canvas).mousemove(function(e) {
var offset = $(canvas).offset();
var upX = e.pageX - offset.left;
var upY = e.pageY - offset.top;
var width = upX - mouseDownX;
var height = upY - mouseDownY;
if(option == ShapType.RECTANGLE){
shap.attr( { "width": width > 0 ? width : 0,
"height": height > 0 ? height : 0 } );
}else if(option == ShapType.CIRCLE || option == ShapType.LINE){
shap.updateEnd(upX, upY);
}
}); // end mouse down.
});// end mouse down.
$(canvas).mouseup(function(e) {
$(canvas).unbind('mousemove');
if(option == ShapType.RECTANGLE){
var BBox = shap.getBBox();
if ( BBox.width == 0 && BBox.height == 0 ) shap.remove();
}
}); // end mouse up.
}); // end document ready.
$("#done").click(function(e) {
$(canvas).unbind('mouseup');
$(canvas).unbind('mousemove');
$(canvas).unbind('mousedown');
});
$("#clear").click(function(e) {
$(canvas).find('rect, circle, path').each(function(i, obj) {
$(this).remove();
});
});
$("#deleteshap").click(function(e) {
$('#' + elemClicked).remove();
});
var start = function() {
this.ox = this.attr("x");
this.oy = this.attr("y");
this.attr({
opacity: shapOpacity
});
this.ow = this.attr('width');
this.oh = this.attr('height');
}
var move = function(dx, dy) {
nowX = Math.min(paper.width, this.ox + dx);
nowY = Math.min(paper.height, this.oy + dy);
nowX = Math.max(0, nowX);
nowY = Math.max(0, nowY);
this.attr({
x: nowX,
y: nowY
});
if (this.attr("fill") != fillColor) this.attr({
fill: fillColor
});
}
var up = function() {
this.attr({
opacity: shapOpacity
});
if (this.attr("y") < 60 && this.attr("x") < 60) this.attr({
fill: fillColor
});
};
var reset = function(){
$(canvas).unbind('mousedown');
$(canvas).unbind('mousemove');
$(canvas).unbind('mouseup');
}
function drawLine(startX, startY, endX, endY) {
var start = {
x: startX,
y: startY
};
var end = {
x: endX,
y: endY
};
var getPath = function() {
return "M" + start.x + " " + start.y + " L" + end.x + " " + end.y;
};
var redraw = function() {
node.attr("path", getPath());
node.attr({
stroke: borderColor
});
}
var node = paper.path(getPath());
$(node.node).attr('id', 'shap' + startX + startY);
node.click(function(e) {
elemClicked = $(node.node).attr('id');
});
return {
updateStart: function(x, y) {
start.x = x;
start.y = y;
redraw();
return this;
},
updateEnd: function(x, y) {
end.x = x;
end.y = y;
redraw();
return this;
}
};
};
function drawRectangle(x, y, w, h) {
var element = paper.rect(x, y, w, h);
element.attr({
fill: fillColor,
opacity: shapOpacity,
stroke: borderColor
});
$(element.node).attr('id', 'shap' + x + y);
element.drag(move, start, up);
element.click(function(e) {
elemClicked = $(element.node).attr('id');
});
return element;
}
function drawCircle(x1, y1, x2, y2)
{
var center = {
x: (x1+x2)/2,
y: (y1+y2)/2
};
var radius = {
h: Math.sqrt((y2 - y1) * (y2 - y1))/2,
w: Math.sqrt((x2 - x1) * (x2 - x1))/2
};
var getPath = function () {
return [["M", center.x, center.y], ["m", 0, -radius.h],
["a", radius.w, radius.h, 0, 1, 1, 0, 2 * radius.h],
["a", radius.w, radius.h, 0, 1, 1, 0, -2 * radius.h],
["z"]];
};
var redraw = function () {
node.attr("path", getPath());
node.attr(
{ fill: fillColor,
stroke: borderColor,
});
};
var node = paper.path(getPath());
$(node.node).attr('id', 'shap' + x1 + y1);
node.click(function(e) {
elemClicked = $(node.node).attr('id');
});
dragCircle(node);
return {
updateStart: function (x, y) {
center.x = (x1 + x) / 2;
center.y = (y1 + y) / 2;
radius.w = Math.sqrt((x - x1) * (x - x1))/2;
radius.h = Math.sqrt((y - y1) * (y - y1))/2;
redraw();
return this;
},
updateEnd: function (x, y) {
center.x = (x1 + x) / 2;
center.y = (y1 + y) / 2;
radius.w = Math.sqrt((x - x1) * (x - x1))/2;
radius.h = Math.sqrt((y - y1) * (y - y1))/2;
redraw();
return this;
}
};
} // end circle
dragCircle = function(node) {
var me = node,
lx = 0,
ly = 0,
ox = 0,
oy = 0,
moveFnc = function(dx, dy) {
lx = dx + ox;
ly = dy + oy;
me.transform('t' + lx + ',' + ly);
},
startFun = function() {},
endFnc = function() {
ox = lx;
oy = ly;
};
node.drag(moveFnc, function() {} , endFnc);
};
});
#canvas{background-color:#eee; background-size:cover; width:400px; height:300px;}
.controls input{background: #15A3D7;border: #eee 1px solid;border-radius: 3px;padding: 3px 12px;margin: 5px 3px;color: #fff;}
.controls select{padding: 3px;background: #eee;}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="controls">
<input id="start" value="Start" type="button" />
<input id="done" value="Done" type="button" />
<input id="deleteshap" value="Delete Shap" type="button" />
<input id="clear" value="Clear All" type="button" />
<select id="action">
<option value="1">Rectangle</option>
<option value="2">Circle</option>
<option value="3">Line</option>
</select>
</div>
<div class="dvcls" id="canvas"></div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/raphael/2.1.2/raphael-min.js"></script>
Here is also a good reference to play with Raphael Js.
http://www.ebooksbucket.com/instant-raphaeljs-starter-b184
Hope this will help.