# Bar Chart strange behaviour

**URL:** <https://mapwindow.discourse.group/t/bar-chart-strange-behaviour/1065>\
**Category:** Uncategorized\
**Created:** [August 2, 2021, 7:25am UTC](https://mapwindow.discourse.group/t/bar-chart-strange-behaviour/1065 "2021-08-02T07:25:27Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![colleen](https://avatars.discourse-cdn.com/v4/letter/c/f19dbf/32.png) [@colleen](https://mapwindow.discourse.group/u/colleen)\
**Post date:** [August 2, 2021, 7:25am UTC](https://mapwindow.discourse.group/t/bar-chart-strange-behaviour/1065/1 "2021-08-02T07:25:27Z")

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Hi

I have bar charts with 3 bars for fatal, serious and slight injuries at an accident location. A few of the Locations show no chart when zoomed out. At first I thought my data was incorrect but if you zoom in on that point the chart appears. For eg I have a Location with 1 Fatal so it showed 1 small red bar chart. Fairly close by there was another Location with 2 fatal, 1 serious and 1 slight. No chart is shown until I zoom in, then I see the red, orange and yellow bars. It is just a few random Locations that behave like this with varying injuries. Does anyone know how I can correct this?

Thanks

Colleen Crawford

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**Author:** ![jerryfaust](https://yyz2.discourse-cdn.com/free1/user_avatar/mapwindow.discourse.group/jerryfaust/32/378_2.png) [@jerryfaust](https://mapwindow.discourse.group/u/jerryfaust)\
**Post date:** [August 17, 2021, 5:14am UTC](https://mapwindow.discourse.group/t/bar-chart-strange-behaviour/1065/2 "2021-08-17T05:14:47Z")

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Hello @colleen

I’m not sure, but could this be related to Chart collisions? See the Chart.[AvoidCollisions](https://www.mapwindow.org/documentation/mapwingis4.9/class_charts.html#a46a5ebd29ad51880c0e812d1eef270d2) and [CollisionBuffer](https://www.mapwindow.org/documentation/mapwingis4.9/class_charts.html#aa39a78d151312ea89bfd70c23dc2ba12) settings.

Regards,  
Jerry.

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**Author:** ![pmeems](https://yyz2.discourse-cdn.com/free1/user_avatar/mapwindow.discourse.group/pmeems/32/9_2.png) [@pmeems](https://mapwindow.discourse.group/u/pmeems)\
**Post date:** [January 31, 2022, 3:08pm UTC](https://mapwindow.discourse.group/t/bar-chart-strange-behaviour/1065/3 "2022-01-31T15:08:27Z")

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Closed on January 31, 2022, 3:08pm UTC