deserts | The Deserts of the West - a 2015 NaNoGenMo entry

By using a computed method, we can automatically create the visibleColumns data element. It defaults to all columns when there's no selected column, otherwise it returns only the selected columns.

The vue template then checks if the column is in visibleColumns. It also automatically creates data columns based on visibleColumns.

That's because you're iterating the wrong place. Try this:

Couple things...

You have several mistakes in the way you are creating your buttons. Also, if you're adding them to a stack view, don't bother setting their frames (that will be overridden by the stack view anyway).

You might be better off using multiple sections for your table view.

The buttons will be too wide to fit, so you probably want to put the stack view into a scroll view.

Anyway, it's not clear how you're parsing and storing your data, so I just mocked up an example. This assumes you have your green @IBOutlet weak var categoryView: UIView! already setup:

There are multiple sources that provide elevation data. Bing Maps, Mapbox and ArgGIS (ESRI) are the most well-known services in that area. In rare cases like deserts some of them cover areas whereas the others do not. In your case if MapBox does not cover the Saudi-Arabian desert you can try out one of those other sources.

In order so solve your problem within MapBox you have to first extract data from a viable source and provide it to MapBox. Fortunately MapBox supports third-party data: MapBox: how to use custom data

There are also many third-party tools that you can use or learn from.
Have a look at this Asset from the Unity Asset Store for example: Online Maps v3
This asset allows you to keep your MapBox style, cache the tiles locally to save cost, use multiple elevation sources, create 3D-buildings in cities and fill in relevant data from the google api.

In order to have a globally working game you have to check multiple sources and use the one that has the elevation data that you want. Unfortunately, in some cases you won't find any data at all as it has not been mapped yet at all. In this case you have to exclude it from your game.

Using ggplot - you can add two geom_violin() and in the second one, use new data.

I used mtcars as sample data.

The forEach method only iterates over all items but does not return anything. Instead, what you want to use is a map. Also, make sure you wrap your return value when it extends more than one line:

When you use v-slot:body together with v-slot:expanded-item, you are overriding your changes inside v-slot:expanded-item. This is because expanded-item slot is inside the body slot. If you are going to use body for customization, you unfortunately have to customize everything inside.

Imagine a structure like this:

Your problem here is types!

You're comparing string values of opacity to a number, and also trying to concatenate these values:

"0.1" + 0.1 == 0.10.1 - this will break your interval

You'll need to cast the value of the read opacity value to a float to update it

You can create a decodable struct that you will use to wrap your input and output into.

This will look like: