Current Page: NeXtMidas Training Working with Files Plotting Files Features
- -   | Plot Features: A feature is a single element of data rendered on a plot. Features can include: boxes, ellipses, points (with various symbols), lines, etc. Features can be added to `PLOT` with the `FEATURE` command. There are several types of features; a few of them include: Box A rectangular box with center at `(x,y)` and length/height `(dx,dy)`. Elps (Ellipse) Draws an ellipse. HLine / VLine Draws horizontal/vertical lines. Symbol A point rendered with one of the various symbols, including:
          CROSS   - A 'x' symbol.       TRIANGLE  - A triangle symbol.
          PLUS    - A '+' symbol.       UTRIANGLE - A triangle (up).
          STAR    - A '*' symbol.       DTRIANGLE - A triangle (down).
          CIRCLE  - A circle symbol.    RTRIANGLE - A triangle (right).
          SQUARE  - A square symbol.    LTRIANGLE - A triangle (left).
          DIAMOND - A diamond Symbol.   ASCII-<s> - An ASCII string <s>.
          DOT     - A small dot/pixel.  ARROW     - A block arrow.
          AERO    - An airplane symbol.
Symbols have a number of options, including size, fill/no-fill, rotation, etc. A complete list of the feature types and a complete list of symbols is included in the `FEATURE` explain file. A plot can have many different features. Features are not necessarily homogeneous. Attributes of different features may vary greatly. Features typically have a large amount of variability while elements in a layer are usually homogeneous. Like layers, it is possible to create your own feature types, see the `FEATURE` explain file for details. For more details see the `FEATURE` explain file or see `%test_feature` in the `test` area of SYS.
Don't Make This Mistake:
Take care when sizing features. The type Symbol uses Pixel-Size (i.e. feature is the same size on screen regardless of zoom level), others use Real-World-Coordinates (i.e. feature zooms in relation to the plot).