This javascript code hides all the markers on a google map which I initially populated using the gmaps4rails gem in a Rails 3.2 app.
var markers=Gmaps.map.markers
for(i=0;i<markers.length;i++){markers[i].serviceObject.setVisible(false); }
The issue I have is that the "clusters" still show the same counters before and after the above code is ran. I've searched around a bit and haven't figured out the write line(s) to add to update the clusters.
P.S. I'm pretty sure that "cluster" is the correct name for what I'm talking about. What I'm referring to are the counters that the map shows when you are zoomed out to a view where there isn't enough room to distinguish between individual markers and the map shows a colored, circularish icon with a count of the number of map markers in that area.
If you want to update your map with a different set of markers, we'll call them differentMarkers you can call
var differentMarkers = ...
Gmaps.map.replaceMarkers(differentMarkers);
and the clusters will update.
If you want to add markers to the existing set use
var additionalMarkers = ...
Gmaps.map.addMarkers(additionalMarkers);
I haven't found a method to remove markers but you could call the replaceMarkers with an array that has the markers removed.
Not sure if this is the way it is meant to be done but seems to work.
Adding and replacing markers this way is also explained in the wiki for gmaps4rails. https://github.com/apneadiving/Google-Maps-for-Rails/wiki/Javascript-goodies
Related
In order to refresh a part of the grid, i.e., when font or alignment changes, I was using the following approach:
wxRect rect1=CellToRect(TopLeft);
wxRect rect2=CellToRect(BottomRight);
wxRect r(rect1.GetTopLeft(), rect2.GetBottomRight());
RefreshRect(r);
This was refreshing only a part of the intended block and was not working correctly.
From the suggestions of intellisense I came across RefreshBlock function and it works correctly. I searched the docs and have not found any information on it. I wonder if it is not recommended to use RefreshBlock for some reason? What does RefreshBlock do, does it refresh a block (as the name suggests) or is it equivalent to Refresh?
I am using wxWidgets 3.2 on Win10.
Thanks in advance.
The function RefreshBlock() is indeed the best way to do what you want and it was only undocumented by mistake, i.e. we simply forgot to do it. I've added documentation for it only now, so it will only get included in 3.2.1, but you can still use it in your code, the function itself is available since 3.1.3.
It seems from the source code that, depending on the location of its parameters, RefreshBlock refreshes any of the following:
corner grid
frozen cols grid
frozen rows grid
main grid
Since the area I wanted to refresh was on the main grid the following approach works (the idea is similar to RefreshBlock's approach):
auto GridWnd = CellToGridWindow(TL);
wxRect rect = BlockToDeviceRect(TL, BR, GridWnd);
GetGridWindow()->RefreshRect(rect);
Now everything is refreshed correctly.
Notes:
If only RefreshRect(rect) is called, things will NOT work as expected.
Little experiment showed that BlockToDeviceRect(TL, BR) also works, therefore eliminating the need for auto GridWnd = CellToGridWindow(TL);
https://github.com/highcharts/highcharts-vue
I don't see examples of these in the demo and there is nothing mentioned in the docs. I'm wondering if it is simply not possible or just not demoed because of their more complicated nature.
I will also need to use Charts appendData prototype to make a line chart real-time. Is this possible using the wrapper? I'm thrown by the following in the docs but not sure it it's directly related;
You can access the Chart object instance if necessary (e.g when need
to get some data or use any of Chart.prototype functions), by calling
specific Vue component instance chart field, but it is not supported
to update the chart using its built-in functions
Indeed, the highcharts-vue package supports all official modules included in Highcharts, so it's not necessary to produce every demo from demos site using Vue wrapper. I made the examples with gauge and heatmapseries specially for you, so please take a look on them.
I will also need to use Charts appendData prototype to make a line chart real-time. Is this possible using the wrapper?
A component is watching for changes on provided chart configuration, so if you will update your data (e.g by pushing new points into a series.data), then highcharts-vue will detect it, and automatically update the chart. That's the most recommended way of implementation. If you would like to use some Chart's or Series prototype functions, of course you can do that, but please note that causes inconsistency between the chart data and the data defined within component. Just need to access chart's reference like it is described in Chart object reference section.
Live examples:
https://codesandbox.io/s/vue-template-uqu1p (Gauge),
https://codesandbox.io/s/vue-template-8z2f5 (Heatmap)
I want to create a new object so as to instantiate and use it several times;
For example, if I want to create an object that has a label and a button inside, how do I? I created a new NSObject but inside it has nothing, then how do I make everything from scratch since there was a viewDidLoad for example (obviously, since it has a view)?
thanks!
Your questions lead me to think that you're really just starting out. There's nothing wrong with that, but rather than trying to summarize several megabytes of documentation in a few paragraphs, I'm just going to point you to the iOS Starting Point. I think that you're just trying to create a container that can hold other UI components? If so, use a UIView for that. However, don't jump in and try to get something specific done without first reading through some of the Getting Started documents -- you'll just end up back here, and we'll just point you back to the docs. You might like the Your First iOS Application guide, as that lets you get your feet wet but explains things along the way.
I'm sure you've all seen this error before in your Titanium mobile projects. I've been getting it in an app I'm working on. It is usually thrown by the same type of operation, but not all the time and not in the same place. I'm wondering if anyone has found a solution to this issue yet.
The error is usually generated when I am iterating through an array of objects, and using that data to create views. Each new view is below its previous sibling, so the new view's top property looks something like this:
top = (from_top + old_view.height + 10);
As you can see I'm using the view.height property to figure out my top property, and I assume this is part of the problem. Anyone had any luck with this, or are you using a work around to avoid using a view's height property in addition?
(This is also posted on the Appcelerator Q&A site)
Why don't you use layout: 'vertical' instead of manually specifying the heights? It isn't in the docs at the moment, but as of 1.5 you can specify layout: 'vertical' on windows and scrollviews, possibly on views as well. Works on both iOS and Android.
To remove a normal marker from a map, I understand you simply call marker.setMap(null), but when implementing the Google Maps directions services, it automatically adds markers A and B onto the map ( calculating directions from point A to point B ). I do not have control over these markers, so I cannot remove them in the normal way. So how can I remove these markers (I have custom markers on the map instead)?
Set the suppressMarkers option to true when creating your DirectionsRenderer object and then the markers won't show up. You could also change the style or icon of the markers. See the API spec for DirectionsRendererOptions for other properties you can set.
...
directionsDisplay = new google.maps.DirectionsRenderer({suppressMarkers: true});
...
EDIT: It looks like the API changed a little bit since my original answer almost 6 years ago, so the answer from #joni-jones is now the correct way. I tweaked my example above to reflect that.
I had a similar problem. The previous solution did not help me. But I tried this:
var directionsDisplay = new google.maps.DirectionsRenderer({suppressMarkers: true}); And it's work.