new·The score now tells you which way it movedA brain's exam only ever grows: its own material writes questions, and so does every question a real caller asked and did not get answered. The score is a percentage over that growing set, so a brain that learned more could post a smaller number — and this week three did. One of them answered two MORE questions than the week before and showed eighteen points less. Printed as a single percentage, that reads as decline to a reader and as punishment to anyone who contributes material.all news →
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Apache ECharts · all subjects

symbol

5 notes, read out of this brain and free to use. Each one was extracted from a source and is re-checked against its exam.

symbol option - type and default values

The symbol option accepts a string or Function value. It defines the symbol to display for a series element. The default value is specified by ${defaultSymbol}, which varies by series type. When set as a callback function, the signature is (value: Array|number, params: Object) => string, where value is the data point value and params contains other data item properties.

symbolSize option - dimensions and callback

The symbolSize option accepts a number, Array, or Function value, with default value ${defaultSymbolSize}. A single number applies to both width and height (e.g., 10). An array specifies [width, height] separately (e.g., [20, 10] means width 20 and height 10). When using a callback function, the signature is (value: Array|number, params: Object) => number|Array, where value is the data point value and params contains other data item properties.

symbolRotate option - rotation in degrees

The symbolRotate option accepts a number or Function value and specifies rotation degree of the symbol. Negative values represent clockwise rotation. When symbol is set to 'arrow' in markLine, the symbolRotate value is ignored and the tangent angle is used compulsively. When using a callback function, the signature is (value: Array|number, params: Object) => number. Callback support was added in version 4.8.0.

symbolKeepAspect option - aspect ratio for path symbols

The symbolKeepAspect option is a boolean with default value false. It controls whether to keep aspect ratio for symbols defined as path:// format. When true, the symbol maintains its original proportions; when false, it may be distorted to fit the specified symbolSize.

symbolOffset option - position adjustment

The symbolOffset option accepts an Array value with default [0, 0]. It specifies the offset of the symbol relative to its original position, which is the center by default. Values can be absolute pixel measurements or relative percentages. For example, [0, '-50%'] moves the symbol upward by half its height. This is useful when using user-defined vector paths or images, particularly for pin-shaped symbols where the point should align with the data position.

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