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Color Properties (Quantitative Palettes (Options for quantitative palettes…

- - - - When there are both positive and negative values for the field, then the default range of values will use two color ranges and the Edit Colors dialog box for the field has a square color box on either end of the range.This is known as a diverging palette.
    - - When all values are positive, then the default range of values will use a single color range and the Edit Colors dialog box for the field has a square color box only at the right end of the range. This is known as sequential palette.
  - - - Click Stepped Color to group values into uniform bins, where each bin is associated with a color. Use the spin control to specify how many steps (bins) to create.
    - - Click Reversed to invert the order of colors in the range.
    - - With a diverging (two-color) palette, select to Use Full Color Range. Tableau assigns both the starting number and the ending number a full intensity for both color ranges. So if the range is from -10 to 100 , the color representing negative numbers will be adjusted to change in shade much more quickly than the color representing positive numbers. If Use Full Color Range is not selected, Tableau assigns the color intensity as if the range of values was from -100 to 100, so that the change in shade is the same on both sides of zero. This means there will be much less change on the negative side, where actual values only range from -10 to 0, than the positive side, where values range from 0 to 100.
    - - Click Advanced in the Edit Colors dialog box, choose to specify the start, end, and center RGB values for the range by selecting the check box and typing a new value into the field. The Start value is the lower limit in the range, the End value is the upper limit, and the Center value is where the neutral color is located on a diverging color palette.
    - - To return to the Automatic palette and the default color assignments, click Reset in the Edit Colors dialog box.
- - - - Click a value on the left, under Select Data Item.
        
        Click a new color in the Palette on the right.
        
        Repeat for as many values that needed to be changed.
        
        Click OK to exit the Edit Colors dialog box.
    - - The Select Color Palette drop-down list in the Edit Colors dialog box provides color palettes that can be used for discrete fields. The list contains both categorical and ordinal palettes.
        At the top of the list are categorical palettes, such as Tableau 10. As noted above, categorical palettes are appropriate for discrete fields with no inherent order.
        At the bottom of the list are ordinal palettes, such as Orange. Ordinal palettes contain a range of related colors and are appropriate for fields that have an associated order, such as dates or numbers.
        After selecting a palette, click Assign Palette to automatically assign the new palette colors to the members in the field.
        To return to the automatic palette and the default color assignments, click Reset in the Edit Colors dialog box
- - - - Modify the opacity of marks by moving the slider.
        Adjusting opacity is especially useful in dense scatter plots or when looking at data overlaying a map background image. Slide the slider towards the left, marks becomes more transparent.
    - - By default, Tableau displays all marks without a border. Turn on mark borders for all mark types except text, line, and shape. On the Color drop-down control, select a mark border color.
    - - To make more marks visible against a background image or map, surround each mark with a solid contrasting color called a halo. Mark halos are available when there is a background image or a background map. On the Color drop-down control,select a mark halo color.
    - - When using the Line mark type, add a marker effect to show or hide points along the line. Show selected points, all points, or no points. On the Color drop-down control, select a marker in the Effects section.