javascript google map v3 and data property missing - google-maps-api-3

Trying to load a geojson result into my google map. According to the documentation ("Every Map has a Data object by default, so most of the time there is no need to construct one.") I can just do map.data.loadGeoJson. The problem is that there is no data property on map. So I tried to just create on by doing google.maps.Data(). Again Data is not a recognized type. This comes from documentation of version 3.16. Can anybody tell me what I am doing wrong? this is the url I use to reference map:
https://maps.googleapis.com/maps/api/js?libraries=visualization&sensor=false&language=en&v=3.16

It's a property of the google.maps.Map-instance:
var someMapInstance=new google.maps.Map(/*arguments*/);
//someMapInstance.data will be what you are looking for
console.log(someMapInstance.data);

Now it is showing up. I had recently changed my link from version 3.14 to 3.16 so maybe it just got stuck in cache though not sure how since the url was different but either way it is working now.

Related

Here API | MultiValueQueryParameter for Via Points

I'm using the latest version of the here javascript sdk 3.1.32.0
When I use H.service.Url.MultiValueQueryParameter for my via points like
{
...,
via: new H.service.Url.MultiValueQueryParameter(['50.1234,8.7654', '51.2234,9.1123']);
}
I see in the URL params of my request this: &via=%5Bobject%20Object%5D
Someone an idea why this happens?
Thanks in advance!
When you use "via" parameter, you define a list of via waypoints. A via waypoint is not a native datatype recongnized by JavaScript, therefore, you will see in the URL params the word object refering to a particular data structure, in this case the via Waypoint composed mainly by Latitude, Longitude.
Regards.
This took a while to figure out the actual issue with the malformed url params. I was dynamically loading the here maps service script on mount of a component. Accidentally this happened in some cases twice. In both cases H was globally available and everything worked like expected. BUT when the script was loaded twice H.service.Url.MultiValueQueryParameter didn't return the correct params. It basically encoded them twice, or tried to.
The other side issue was that https://www.npmjs.com/package/#types/heremaps is outdated and doesn't cover MultiValueQueryParameter. So I had to remove the types and use my own. Else I probably would have realized the issue earlier.

How do I extract a jpeg's EXIF thumbnail using ImageSharp?

I am trying to extract thumbnails from source jpegs and save them to the file system, using the C# ImageSharp library. I see there is some mention of it in the intellisense for the component:
SixLabors.ImageSharp.Image.Metadata.ExifProfile.CreateThumbnail()
...but I can't seem to find any documentation for it or examples to call it correctly.
I did find this:
using SixLabors.ImageSharp;
using SixLabors.ImageSharp.PixelFormats;
using SixLabors.ImageSharp.Processing;
//method code:
Image<TPixel> thumbnail = image.Metadata.ExifProfile.CreateThumbnail<TPixel>();
https://docs.sixlabors.com/api/ImageSharp/SixLabors.ImageSharp.Metadata.Profiles.Exif.ExifProfile.html
...but I need to find where the TPixel type is to get it to work. VisualStudio doesn't recognize it and I can't seem to find a namespace or use it correctly:
"The type or namespace name 'TPixel' could not be found (are you missing a using directive or an assembly reference?)"
Legacy Windows .NET Framework could do this for System.Drawing.Image.Image.GetThumbnailImage() and it worked pretty well.
EDIT: Using tocsoft's answer, I changed the code to:
if (image.Metadata.ExifProfile != null)
{
Image<Rgba32> thumbnail = image.Metadata.ExifProfile.CreateThumbnail<Rgba32>();
thumbnail.Save(thumbnailPath, encoder);
}
...however, the image.Metadata.ExifProfile is null, which is unexpected since I know these source images have EXIF data.
EDIT: Actually, it's working now. Success! Thank you!
TPixel would be any of the pixel formats in the SixLabors.ImageSharp.PixelFormats namespace. But unless you are planning on interoperating with other systems that require the pixel data layed out in memory in specific ways you will likely just want to use Rgba32
Image<Rgba32> thumbnail = image.Metadata.ExifProfile.CreateThumbnail<Rgba32>();

What is the RKUIManager?

I get an error with RKUIManager, or more precisely:
Could not invoke RKUIManager.manageChildren
It appears for example when I'm using firebase with React Native and try to set a reference in the constructor of a component with a prop. For ex:
messagesRef = FBRef.child("Messages").child(this.props.currentMeetingID)
If I change it to the following it works, and yes, I have checked if this.props.currentMeetingID is a legitimate value.
messagesRef = FBRef.child("Messages").child("123456789")
I can't seem to locate the problem nor reproduce it perfectly. I'm just trying to figure out if it's my machine or some kind of bug elsewhere.
Right now I'm just looking for info about what RKUIManager actually is.
If I nullcheck this.props.currentMeetingID I fix it, easy fix but nowhere to be found on the internet so I'll leave it here for anyone passing by. Probably me in a couple of weeks...

Drupal OpenLayers Module JS error

I've created a form (using FormEntity) that contains a Map to record user input location (see example). Everything works (almost) fine except that I've got a weird JS error when I want to draw a polygon or a point on the map. The error is : TypeError: c.N(...) is undefined.
I've tried to use the ol-debug.js library to have more details about the error, but when I do that I don't have the possibility to draw anymore.
Another strange thing is, this map works perfectly fine during the configuration step of the CCK field. I can draw on the map and I don't have any error. This one happens only on the main page.
Do you have any idea what is wrong ?
Thanks for your help
Arnaud

Facebook Open Graph Story Determiner not working

I am trying to use 'the' as the article for my object, but FB is simply ignoring it and is using 'a' instead.
When I run the object's url in FB's debugger I see all the info that's necessary. All the other properties are being used just fine.
Anyone have any idea why this is happening?
Object types cannot use "the", only "a/an". So if your determiner isn't showing when not using the object's title, that's why.

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