I would appreciate help to copy a line from one MT4 chart to another programatically. If I draw a line on a one hour time frame I would like the line to be recreated on my 15 min chart time frame as well as my 1 min time frame. So I have three charts and drawing a line on the one chart should recreate the line on the other two charts as well. The line that I draw on my 1 hour time frame will be drawn with a mouse rather than the line being drawn programatically.
This seems to be the answer:
void OnChartEvent(const int id,
const long &lparam,
const double &dparam,
const string &sparam)
{
//---
long lNextChartID = 0, lSecondChartID = 0;
datetime dtOpenTime,dtCloseTime;
double dOpenPrice,dClosePrice;
if(id==CHARTEVENT_OBJECT_CREATE)
{
if(ObjectType(sparam) == OBJ_TREND)
{
lNextChartID = ChartNext(ChartID());
lSecondChartID == ChartNext(lNextChartID);
dtOpenTime = ObjectGet(sparam,OBJPROP_TIME1);
dtCloseTime = ObjectGet(sparam,OBJPROP_TIME2);
dOpenPrice = ObjectGet(sparam,OBJPROP_PRICE1);
dClosePrice = ObjectGet(sparam,OBJPROP_PRICE2);
if(ChartSymbol(lNextChartID) == ChartSymbol(0) &&
ChartPeriod(lNextChartID) < ChartPeriod(0))
{
ObjectCreate(lNextChartID,sparam + "1",OBJ_TREND,0,dtOpenTime,dOpenPrice,dtCloseTime,dClosePrice);
}
}
}
}
Related
I have an issue with spline chart update with every second. Chart redraw every time so it is not showing constant wave.
Here is image how it looks
I have tried like this
this.timeinterval = setInterval(() => {
const x = (new Date()).getTime() + 7200000; // current time
if (this.voltage) {
this.chart['series'][0].addPoint([x, this.voltage], true, true);
}
}, 250);
How can i fix it to go smoothly.
In my actionscript 3 i have a textfield, which i fill with the messages (get them from the webservice). Not all the messages are visible, so every (for Example) 5s i'm moving them vertically to the top.
To do that, i'm using the Tween effect, but the thing is, that it moves only the visible text and not the rest text together (the invisible one).
When scrolling - i can see the rest text.
Image to show the situation (Sorry for my skills):
Here are some code: Function to fill messages object. Plus count how many lines every message will take to display ( so i could easilly use the tween effect (From - to))
private function getNewMsg(e:ResultEvent):void
{
size = e.result.toString().split(" ").length - 1;
for (var i=0; i<size; i++)
{
smsList.push(new smsItem(e.result[i].Id, e.result[i].text));
}
summ = 0;
for (var d=0; d<size; d++)
{
textfield.appendText(smsList[d].Text.toUpperCase()+'\n');
if (d >= 1)
{
smsList[d].Lines = textfield.numLines - summ;
summ += smsList[d].Lines;
}
else
{
smsList[d].Lines = textfield.numLines-1;
summ += smsList[d].Lines + 1;
}
}
twEnd = smsList[1].Lines * (-30.5);
}
And on timer i'm starting the Tween:
function timerHandler(e:TimerEvent):void
{
myTweenX = new Tween(textfield, "y", None.easeIn, twStart, twEnd, 4, true)
myTweenX.addEventListener(TweenEvent.MOTION_FINISH, tweenCompleted);
}
function tweenCompleted(e:TweenEvent):void
{
twInd++;
twStart = twEnd;
twEnd += smsList[twInd].Lines * (-30.5);
}
Found the problem. Because of my fixed textfield height, text wasn't. After made the textfields height auto size, evrything got fixed.
I'm currently working on a graph, which should visualise a fixed time frame. I want to have the start and end of the timeframe fixed on the width of the graph and want to set a custom amount of ticks in between, depending on the timeframe.
I tried to find something in the highcharts docu, but it seems there is nothing for gwt as "tickpositioner" or "tickpositions" for javascript would do.
Has anybody an idea how to approach a solution in gwt to achieve this behaviour please?
I found a solution where i set the tickpositioner in the JSONObject and implement the function in javascript. Mind the "positions.info" because due to the tickpositioner function, label predefined label formatting gets lost.
void setXaxisTicks(XAxis xAxis, Long start, Long end) {
JSONObject options = xAxis.getOptions();
options.put("tickPositioner", null);
configureXAxis(options.getJavaScriptObject(), start, end);
}
private native void configureXAxis(JavaScriptObject javaScriptObject, Number start, Number end) /*-{
javaScriptObject.tickPositioner = function () {
var positions = [],
tick = Math.floor(start),
increment = Math.ceil((end - start));
for (tick; tick - increment <= end; tick += increment) {
positions.push(tick);
}
tLen = positions.length;
positions.info = {
unitName: "minute",
higherRanks: {},
totalRange: positions[tLen - 1] - positions[0]
};
return positions;
};
}-*/;
I am using AchartEngine library to plot the measurements from a sensor. The values are in the order of 1E-6.
When I try to plot the values they are shown correctly but as I zoom the plot, the maximum resolution I can see in the x Labels is in the order of 1E-4. I am using following code to change the number of labels:
mRenderer.setXLabels(20);
mRenderer.setYLabels(20);
I am also changing the range of the y axis, but the resolution remains unchanged. Has anyone found this problem before?
EDIT
I do not have enough reputation to post images, but the following link shows the chartview that I am getting.
https://dl.dropboxusercontent.com/u/49921111/measurement1.png
What I want is to have more grid lines between 3.0E-5 and 4.0E-5. Unfortunately I have not found how to do that. I also tried changing the renderer pan, initial range of the plot and zoom limits. all without sucess. I was thinking the only option left would be to override some of the draw methods but I have no clue how to do that.
I Have digged into the source code of AChartEngine and found the problem that it has when small numbers are to be plotted. It is in a static function used to draw labels by every chart:
private static double[] computeLabels(final double start, final double end,
final int approxNumLabels) {
// The problem is right here in this condition.
if (Math.abs(start - end) < 0.000001f) {
return new double[] { start, start, 0 };
}
double s = start;
double e = end;
boolean switched = false;
if (s > e) {
switched = true;
double tmp = s;
s = e;
e = tmp;
}
double xStep = roundUp(Math.abs(s - e) / approxNumLabels);
// Compute x starting point so it is a multiple of xStep.
double xStart = xStep * Math.ceil(s / xStep);
double xEnd = xStep * Math.floor(e / xStep);
if (switched) {
return new double[] { xEnd, xStart, -1.0 * xStep };
}
return new double[] { xStart, xEnd, xStep };
}
So this function basically takes the start (minimum) and and end (maximum) values of the plot and the aproximate number of labels. Then it rounds the values and computes the step of the grid (xStep). If the difference between start and end is too small (0.000001f) then the start and end are the same and the step is 0. That is why its not showing any labels in between this small values nor any grid lines!. So I just need to change the 0.000001f with a smaller number or with a variable in order to control the resolution of the grid. I hope this can help someone.
I'm seeing some odd behavior in a Highcharts line chart. I have multiple series displayed, and need to let the user change what's called the "Map level" on the chart, which is a straight line across all time periods. Assuming that the correct series is
chart.series[i]
and that the new level that I want it set to is stored in var newMapLevel,
I'm changing that series' data like so:
data = chart.series[i].data;
for(j=0; j<data.length; j++){
data[j].y = newMapLevel;
}
chart.series[i].setData(data);
Calling this function has the desired effect UNLESS the new map level y_value is ONE greater than the highest y_value of all other series, in which case the y-axis scale blows up. In other words, if the y_axis scale is normally from 0 to 275,000, and the highest y_value of any of the other series is, say, 224,000, setting the new map level value to 224,001 causes the y_axis scale to become 0 to 27500M. Yes, that's 27.5 billion.
Might this be a bug in Highcharts? Or is there a better way to change the data in a series?
I've posted a fiddle: http://jsfiddle.net/earachefl/4FuNE/4/
I got my answer from the Highcharts forum:
http://highslide.com/forum/viewtopic.php?f=9&t=13594&p=59888#p59888
This doesn't work as smoothly as I'd like. When you go from 8 as your line to 2 as your line, the scale doesn't adjust back down until you enter another value. Perhaps it's a start in the right direction.
$(document).ready(function(){
$('#clickme').click(function(){
var newMapLevel = $('#newMAP').val();
if(newMapLevel){
for(i=0; i<chart.series.length; i++){
if(chart.series[i].name == 'Map Level'){
data = chart.series[i].data;
for(j=0; j<data.length; j++){
data[j].y = newMapLevel;
}
// get the extremes
var extremes = chart.yAxis[0].getExtremes();
//alert("dataMin: " + extremes.dataMin);
//alert("dataMax: " + extremes.dataMax);
// define a max YAxis value to use when setting the extremes
var myYMax = extremes.dataMax;
if (newMapLevel >= myYMax) {
myYMax = Number(newMapLevel) + 1; // number conversion required
}
if (myYMax > chart.yAxis[0].max) {
alert('cabbbie');
myYMax = chart.yAxis[0].max + 1;
}
//alert("myYMax: " + myYMax);
chart.yAxis[0].setExtremes(extremes.dataMin, myYMax)
// finally, set the line data
chart.series[i].setData(data);
}
}
}
}); });