I banged and banged my head on this one for a while and I figured someone else may have this problem down the line. I'm posting my full issue and resolution to those who come later, and to offer a spot for any improvements/simplifications if anyone finds one.
Issue was I am trying to paint VerticalLineAnnotations on my ChartArea. I do not want to anchor it to any data points but merely anchor it to an X axis based on which ChartArea I send in. In my annotation constructor I was trying to set AnchorX.
double maxdate = chart.ChartAreas[0].AxisX.Maximum;
double mindate = chart.ChartAreas[0].AxisX.Minimum;
//use inputdata to find where relative spot is.
if(DateTime.TryParse(date, out ddate)) {
AnchorX = (ddate.ToOADate()) / (maxdate - mindate);
}
I kept getting the mins and maxs to return as NaN, which I found out means the ChartArea will manage itself and set its own max/mins. This was all pre-painting.
I tried post painting but then everytime it painted, it would add annotation, then do postpaint again and infinite loop.
I finally found an event that lets me do this. The Customize() event solved this issue.
private void chart_Customize(object sender, EventArgs e) {
PaintAnnotations();
}
Now immediately before the painting happens, data seems to be loaded and max and mins are already set by this point and I can get values back in the code from above.
Hope this can save someone the hours that I lost!
Related
Good day,
I have a map with markers that move every 3 seconds to a new location, using ReactLeafletDriftMarker. I cannot, unfortunately, share my code since it is confidential.
My issue is that the markers do not drift, they just jump/appear in the next location.
Does anyone know what causes this to happen?
I can share this snippet:
{Object.entries(latlng).map(([key, value]) => {
return (
<ReactLeafletDriftMarker
position={value}
duration={4000}
keepAtCenter={false}
icon={markerIcon}
>
</ReactLeafletDriftMarker>
);
})}
It shows how (around) 400 points move on a map.
All help is appreciated, thanks.
It was a simple mistake. I assigned a key to the container, so it re-rendered every time the markers changed position values.
I am using the A* graph package that I found here.
https://arongranberg.com/astar/download
it all works well in scene view and I was able to set the graph to treat walls like obstacles.
However once I start the game the canvas scales and the graph's nodes no longer align with the walls.
this is really messing up my path finding. If anyone has any ideas how to fix this that would be much appreciated. I tried parenting the graph to the canvas but it still doesn't scale.
Kind regards
For anyone struggling with this what we did is edited the script of the A* code, in the update function we just got it to rescan once. This means that once the game started and all the scaling had taken place the graph re adjusted its bounds. This is probably not the most proper way but it only took four lines and worked for us.
private bool scanAgain = true;
private void Update () {
// This class uses the [ExecuteInEditMode] attribute
// So Update is called even when not playing
// Don't do anything when not in play mode
if (!Application.isPlaying) return;
navmeshUpdates.Update();
// Execute blocking actions such as graph updates
// when not scanning
if (!isScanning) {
PerformBlockingActions();
}
// Calculates paths when not using multithreading
pathProcessor.TickNonMultithreaded();
// Return calculated paths
pathReturnQueue.ReturnPaths(true);
if (scanAgain)
{
Scan();
scanAgain = false;
}
I'm totally new to highcharts so excuse any mistake in advance.
I have one chart which illustrates amount of bandwidth used according to datetime. (somehow like this example.) I need to show more data to the user whenever the chart is zoomed on xAxis; means new data should be popped up when we are seeing a period of time in detail. fortunately, I have access to that new data, but the main problem is that I don't know how to combine this new data with my old chart.
To make my question more vivid, lets imagine this scenario: assume that I have bandwidth usage for last 2 years in scale of month (for every month on xAxis, I have one value on yAxis), then I zoom in some part of my chart and the chart gets wider and new points pop up on xAxis (what automatically happens in highcharts when we set zoomtype: 'x'), for some of these points, I have some values corresponded to them on yAxis, which I want these new points to be considered in my chart. what shall I do to do this for large scale of data? (e.g. when I have the data for 2 years and I wanna zoom by accuracy of one minute, it is not feasible to include new points manually in between of old series.)
since my code is too large and makes it more complicated to put it here, I try to illustrate my desired result via pictures:
1) this is my chart before zoom:
2) after zoom:
3) and the final result which I do not know how to make it:
Any help would be very appreciated.
Take a look at this live demo: http://jsfiddle.net/kkulig/6gyfx6n7/
I used afterSetExtremes event to check the currently displayed time span and set the appropriate data. If it's shorter than 30 days then I add additional points. Otherwise I restore the default data. pointsAdded helps me to to control whether these operations are actually needed or not.
events: {
afterSetExtremes: function(e) {
var series = this.series[0];
if (pointsAdded && e.max - e.min > 30 * day) {
console.log('Set default data');
series.setData(data.slice());
pointsAdded = false;
} else if (!pointsAdded) {
console.log('Add points');
additionalData.forEach(function(p) {
series.addPoint(p, false);
series.chart.redraw();
pointsAdded = true;
});
}
}
}
To see it working select the last 20 days or so. Then return to the default view by clicking All button.
API references:
https://api.highcharts.com/highstock/xAxis.events.afterSetExtremes
https://api.highcharts.com/class-reference/Highcharts.Series
Hi Stackover'followers :). I'm very much new to Stackoverflow. Let me put forward a question I have regarding Instant Contiki. Anybody who has idea on Instant Contiki, zolertia motes, REST Server, is welcomed to resolve it out.
I could successfully work on the two different motes by considering 'z1-websense.c' and 'rest-server-example.c'.
But I want to get the result of 'z1-websense.c' which is the
temperature, by executing the 'rest-server-example.c'.
So, regarding this, there is something to be done in the 'rest-server-example.c' code, may be by calling a function for z1-websense.c, which I'm unable to crack it.
Please help me out. Thanks in advance.
the rest-engine app on Contiki let's you set up resources and handlers for methods called on them.
So, if I understood, you want to tweak the resource GET handlers in er-example-server to taylor onto the z1 mote, in particular a resource for the battery sensor and a resource for the temperature one.
If you take a look at z1-websense.c the values are retrieved and simply scaled (lines 66-79).
static int
get_battery(void)
{
return battery_sensor.value(0);
}
static int
get_temp(void)
{
return temperature_sensor.value(0);
}
static float get_mybatt(void){ return (float) ((get_battery()*2.500*2)/4096);}
static float get_mytemp(void){ return (float) (((get_temp()*2.500)/4096)-0.986)*282;}
Take that code and inject it into the battery and temperature resources you can find hereenter link description here and you are done.
So in the end you will have something like
file res-battery.c, line 60
float battery = ( battery_sensor.value(0) *2.500*2) /4096 ;
You should do similarly for the temperature and you are done.
Remember to deactivate all sensors/resources you are not interested in, since they would take precious memory.
I cannot test it right now, but this should work.
I'm not yet as much into Java as I'd like to be, so I find my current task to be quite a bit challenging:
A chart showing data gathered in another class.
A slider whose end value is determined by the last entry of in the dataset used in the chart.
The playbutton currently doesn't do anything except letting the slider tick in steps of 5 until it is paused again.
My problem right now is: I am supposed to highlight one item at a time in the chart based on which value the slider currently shows.
And to be honest... I'm not yet used to renderers yet.
If I understood it correctly I would need to use
renderer.drawItem(java.awt.Graphics2D g2,
XYItemRendererState state,
java.awt.geom.Rectangle2D dataArea,
PlotRenderingInfo info,
XYPlot plot,
ValueAxis domainAxis,
ValueAxis rangeAxis,
XYDataset dataset,
int series,
int item,
CrosshairState crosshairState,
int pass)
but I am totally inexperienced with as well the method as its arguments and got no idea how to initialize them.
I mean... I got a plot, a dataset, and 2 series from the chart, I also suggest "item" would be the index of the item to highlight in the series, which I could convert from the slider-value.
Unfortunately plaguing google about it turned out to be rather frustrating since all I got was the very code I posted above on about 50 different pages (I gave up after).
I would like to know ... first of all if I am even about to use the correct method and, as ashamed as I am to ask like this... how to use it.
Well... looking forward to some answers and... thanks in advance.
Well, I now solved my problem in a different way than I intended to but it works out just fine for me.
Instead of highlighting a point in the curves I just simply add a Domainmarker that would adjust based on the value the slider currently shows.
class1 TestSlider
private HashSet<SliderListener> sliderListenerSet = new HashSet<SliderListener>();
public void addSliderListener(SliderListener Listener){
sliderListenerSet.add(Listener);
}
slider.addChangeListener(this);
public void stateChanged(ChangeEvent e) {
// TODO Auto-generated method stub
JSlider source = (JSlider)e.getSource();
if (!source.getValueIsAdjusting()) {
fireSliderChanged();
}
}
public void fireSliderChanged(){
for (SliderListener currentListener : sliderListenerSet)
currentListener.sliderValueChanged();
}
class2 SliderListener
public interface SliderListener extends EventListener{
public void SliderValueChanged();
}
class3 Chart
Marker marker = new ValueMarker(0);
plot.addDomainMarker(marker); //so that it would be there at the beginning
TestSlider ts = new TestSlider();
ts.addSliderListener(new SliderListener(){
#Override
public void sliderValueChanged() {
plot.removeDomainMarker(marker); //I only want one of them at a time - the one with the value the slider is currently showing so remove the old one...
marker = new ValueMarker(ts.slider.getValue());
plot.addDomainMarker(marker); // ... and add the one with the new value
}
});
}
I tried to keep it as short and universal as I could and I hope I didnt cut out anything important.
Well, I'm still new to this site, so... in case I did a mistake somewhere feel free to tell me.