# Help with custom vega visualization **URL:** \ **Category:** Kibana\ **Tags:** vega\ **Created:** [September 12, 2019, 5:15pm UTC](https://discuss.elastic.co/t/help-with-custom-vega-visualization/199297 "2019-09-12T17:15:43Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![alvaro\_lopez](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/alvaro_lopez/32/54096_2.png) [@alvaro\_lopez](https://discuss.elastic.co/u/alvaro_lopez)\ **Post date:** [September 12, 2019, 5:15pm UTC](https://discuss.elastic.co/t/help-with-custom-vega-visualization/199297/1 "2019-09-12T17:15:43Z")
Hello I'm new in Vega visualization, is it possible to create a visualization to compare 2 different dates in the same period? Something similar to timelion offset, for example today between 10 AM and 11 AM and last week with the same period but with a control in the visualization to modify -7d, -15d or another value without changes the code of the visualization? Thanks ---
**Author:** ![lukas](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/lukas/32/6812_2.png) [@lukas](https://discuss.elastic.co/u/lukas)\ **Post date:** [September 12, 2019, 6:17pm UTC](https://discuss.elastic.co/t/help-with-custom-vega-visualization/199297/2 "2019-09-12T18:17:15Z")
Yes, this is possible. If you take a look at the docs here you can see about the `shift` property: [https://www.elastic.co/guide/en/kibana/7.4/vega-querying-elasticsearch.html](https://www.elastic.co/guide/en/kibana/7.4/vega-querying-elasticsearch.html) ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [October 10, 2019, 6:17pm UTC](https://discuss.elastic.co/t/help-with-custom-vega-visualization/199297/3 "2019-10-10T18:17:18Z")
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