You can also visit the link to read about the layer.Ģ. One of the advantages of services is that someone else updates them for you, so you don’t have to worry about downloading the latest version to keep your map up to date. The imagery basemap can also help to explain why extremely dense areas exist right next to unpopulated green space: these places are mountainous, making them difficult to build on.

When viewed together, the Population Trend and Population Density layer suggests that surrounding urban areas are taking some of the burden of urbanization away from extremely dense Hong Kong Island, Kowloon, and Tsuen Wan. Explore the map by zooming, panning, and turning layers on and off.īefore, it seemed as though a lot of bus stops and train stations were located in areas of declining population, but now you can see that those areas are also very densely populated. It is also a service layer, because it is hosted online.ĩ. Like the population density layer, this too is a raster. The basemap updates to show imagery of the earth that was collected by satellites and aircraft. In the Catalog pane, on the Project tab, right-click Databases and choose Add Database. You can add the gdb data the same way you added the shapefile (with the Add Data button), but I’m going to show you another way.Ĥ. Inside the geodatabase are a lot of files with mysterious names. Inside is a file geodatabase: HongKong.gdb. Data stored in a geodatabase will take up less space and perform faster than shapefiles.ġ. If you’re creating or saving data, I recommend using this format instead of shapefiles. GeodatabaseĮsri has since created a new format for storing data-the geodatabase. For example, shapefiles cannot support time, null values, or the full range of Unicode characters. But this data type is older, so it has a number of limitations.

It is easy to save a shapefile and email it to a colleague, so you will come across many shapefiles if you’re searching for data on the internet.

The name fclass may not seem like the most intuitive one, but shapefiles cannot have field names longer than 10 characters, so you’ll often run into cryptic headings like this. The column fclass looks like the most useful one it contains the transportation feature types, including tram stops, bus stops, and railway stations.

A table appears showing the attributes for the points.

Arcgis file type