> For the complete documentation index, see [llms.txt](https://wecon.gitbook.io/pistudio-manual/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wecon.gitbook.io/pistudio-manual/6.-object/6.3-charts/6.3.9-history-xy-plot.md).

# 6.3.9 History XY Plot

**Introduction**

The data in cache will display as continuous curve or separated points, each point in XY plot needs 2 addresses to set a point.

**Description**

![](/files/-LuqEAD2_B-np03IVEA7)

**1) Source**

**Curve buffer:** Select data from \[[History XY Plot](/pistudio-manual/8.-basic-functions/8.7-history-xy-plot.md)] settings and display data in term of curve;

**Curve displays:** HMI will display curves according to select \[Data record], and user could select which curves need to be displayed and select \[Line type] and \[Color] for each curve;

**2) Range**

![](/files/-LuqEAD3-Ro97dyM1V2y)

**Variable:** The data range for the graph could be set as a variable;

**X, Y Limit:** Set the max and min value of displaying curve;

**Result**

When all configurations are completed, when the HMI is running, it displays as shown below.

![](/files/-LuqEAD4rjrF4R7ykIjy)