# PetscDrawLGAddPoints
Adds several points to each of the line graphs. The new points must have an X coordinate larger than the old points. 
## Synopsis
```
#include "petscdraw.h"  
PetscErrorCode PetscDrawLGAddPoints(PetscDrawLG lg, PetscInt n, PetscReal **xx, PetscReal **yy)
```
Logically Collective on lg


## Input Parameters

- ***lg -*** the line graph context
- ***xx,yy -*** points to two arrays of pointers that point to arrays
containing the new x and y points for each curve.
- ***n -*** number of points being added





## Notes
You must call `PetscDrawLGDraw()` to display any added points

Call `PetscDrawLGReset()` to remove all points


## See Also
 `PetscDrawLG`, `PetscDrawLGCreate()`, `PetscDrawLGAddPoint()`, `PetscDrawLGAddCommonPoint()`, `PetscDrawLGReset()`, `PetscDrawLGDraw()`

## Level
intermediate

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/sys/classes/draw/utils/lg.c.html#PetscDrawLGAddPoints">src/sys/classes/draw/utils/lg.c</A>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/sys/classes/draw/utils/lg.c)


[Index of all Draw routines](index.md)  
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