It only takes a minute to sign up. Connect and share knowledge within a single location that is structured and easy to search. Websters defines a chart as. In other words, maps are outlines of part or all of something while charts contain potentially more information like that needed to navigate or identify airspace. Interestingly according to the definition, if used for navigation its a chart. I was taught that charts give information on three dimensions of space while maps only represent two dimensional information.
For example, In the VFR sectional chart above, the altitude of various air-spaces, airports and key landmarks are indicated. For nautical charts, the depth of the water is indicated. Mathematically, and technically , a Map is any one-to-one or one-to-many association between the items in one set or list and the items in another set or list.
You can have a map between the items on the surface of the earth and the points on a chart, but you can also have a map between the cities in the country and the individuals who are the mayors of those cities, or between dates, and the events that took place on those dates, or between the colors in the spectrum, and the frequency of the light that generates the color, etc.
Check out This Wikipedia article about "Mapping". In general, the result of any "Mapping" is a "Map" but only those maps that relate geographic or spatial 2D or 3D points in space to a visual representation of those points are "charts". Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams?
Maps can contain interactive shapes or display markers of different types on an image or map background. Below is an example of a map chart with a feature layer containing interactive shapes.
The different parts of the map, in this case the states in the United States, can be interacted with just as you would with items in any other visualization. In the example below, a map chart with markers is used to display the markers in a geographical or spatial context. A map chart can also be used to show other than geographical data. How to color the shapes is defined in the Colors page of the layer settings, or in the legend.
When lines or points are used, the interactive shapes are the actual lines or points. The color you define in the Colors will be the color of the lines or points. Examples of when maps with lines as interactive shapes could be useful are maps showing highways or a street grid.
Below is an example of a map chart with interactive shapes, where each shape represents a highway. Which geometry type is used in a map is defined in the map data before you load it into your analysis, and this cannot be changed in Spotfire.
In a marker layer, markers or pies are positioned in the different areas. In the example below, the map shows the same geographical area as in the first example, and is also divided into states.
But instead of the states being interactive, a marker is placed in each of the states, and you can interact with the markers just as you do with markers in other visualizations. If the data table for markers or pies has columns containing coordinates, you can use these to position the markers or pies in their correct locations on the map, but you can also map a certain hierarchy e. The markers are also well suited to be displayed on an online map using a map layer or a WMS layer, see below.
Map layers are always used as a reference layer and cannot be interacted with directly. The available default maps can either be compound standard maps which include both borders, labels and roads, or you can use separate layers for each type of information and select only the information of interest. Other types of reference backgrounds are WMS layers. Below, the background WMS layer displays weather observations. A third way to set up a map chart is to use a background image and then position markers or pies on top of that image.
This works similarly to the map with markers or pies, but with the difference that you do not need to have map data in a data table in order to set it up. However, for the markers to be placed correctly in geographical positions, the data table must contain X and Y coordinates. Below is an example of a map chart where the background is a map image of a part of North America.
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