Chart - Markers¶

A marker is a small geometric shape that explicitly indicates a data point position on a line-oriented chart. Line, XY, and Radar are the line-oriented charts. Other chart types do not have markers.

PowerPoint behavior¶

At series level, UI provides property controls for:

Marker Fill
- Solid
- Gradient
- Picture or Texture
- Pattern
Marker Line
- Solid
  - RGBColor (probably HSB too, etc.)
  - Transparency
- Gradient
- Weights & Arrows
Marker Style
- Choice of enumerated shapes
- Size

XL_MARKER_STYLE enumeration¶

https://msdn.microsoft.com/en-us/library/bb241374(v=office.12).aspx

xlMarkerStyleAutomatic	-4105	Automatic markers
xlMarkerStyleCircle	8	Circular markers
xlMarkerStyleDash	-4115	Long bar markers
xlMarkerStyleDiamond	2	Diamond-shaped markers
xlMarkerStyleDot	-4118	Short bar markers
xlMarkerStyleNone	-4142	No markers
xlMarkerStylePicture	-4147	Picture markers
xlMarkerStylePlus	9	Square markers with a plus sign
xlMarkerStyleSquare	1	Square markers
xlMarkerStyleStar	5	Square markers with an asterisk
xlMarkerStyleTriangle	3	Triangular markers
xlMarkerStyleX	-4168	Square markers with an X

XML specimens¶

Marker properties set at the series level, all markers for the series:

<c:ser>
  <!-- ... -->
  <c:marker>
    <c:spPr>
      <a:solidFill>
        <a:schemeClr val="accent4">
          <a:lumMod val="60000"/>
          <a:lumOff val="40000"/>
        </a:schemeClr>
      </a:solidFill>
      <a:ln>
        <a:solidFill>
          <a:schemeClr val="accent6">
            <a:alpha val="51000"/>
          </a:schemeClr>
        </a:solidFill>
      </a:ln>
    </c:spPr>
  </c:marker>
  <!-- ... -->
</c:ser>

Marker properties set on an individual point:

<c:ser>
  <!-- ... -->
  <c:dPt>
    <c:idx val="0"/>
    <c:marker>
      <c:symbol val="circle"/>
      <c:size val="16"/>
      <c:spPr>
        <a:gradFill flip="none" rotWithShape="1">
          <a:gsLst>
            <a:gs pos="0">
              <a:schemeClr val="accent2"/>
            </a:gs>
            <a:gs pos="80000">
              <a:srgbClr val="FFFFFF">
                <a:alpha val="61000"/>
              </a:srgbClr>
            </a:gs>
          </a:gsLst>
          <a:path path="circle">
            <a:fillToRect l="50000" t="50000" r="50000" b="50000"/>
          </a:path>
          <a:tileRect/>
        </a:gradFill>
        <a:ln w="12700">
          <a:solidFill>
            <a:schemeClr val="accent6"/>
          </a:solidFill>
          <a:prstDash val="sysDot"/>
        </a:ln>
        <a:effectLst>
          <a:outerShdw blurRad="50800" dist="38100" dir="14160000" algn="tl" rotWithShape="0">
            <a:schemeClr val="accent6">
              <a:lumMod val="75000"/>
              <a:alpha val="43000"/>
            </a:schemeClr>
          </a:outerShdw>
        </a:effectLst>
      </c:spPr>
    </c:marker>
    <c:bubble3D val="0"/>
    <c:spPr>
      <a:effectLst>
        <a:outerShdw blurRad="50800" dist="38100" dir="14160000" algn="tl" rotWithShape="0">
          <a:schemeClr val="accent6">
            <a:lumMod val="75000"/>
            <a:alpha val="43000"/>
          </a:schemeClr>
        </a:outerShdw>
      </a:effectLst>
    </c:spPr>
  </c:dPt>
  <!-- ... -->
</c:ser>