# Min loss using Weave panel **URL:** \ **Category:** W&B Help\ **Created:** [February 13, 2023, 5:36pm UTC](https://community.wandb.ai/t/min-loss-using-weave-panel/3874 "2023-02-13T17:36:17Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![szymon-piechowicz](https://sea2.discourse-cdn.com/flex020/user_avatar/community.wandb.ai/szymon-piechowicz/32/1195_2.png) [@szymon-piechowicz](https://community.wandb.ai/u/szymon-piechowicz)\ **Post date:** [February 13, 2023, 5:36pm UTC](https://community.wandb.ai/t/min-loss-using-weave-panel/3874/1 "2023-02-13T17:36:18Z")
I logged loss in my run. I would like to compare runs by min loss. I found [this](https://github.com/wandb/wandb/issues/736) feature request, which suggests using a Weave panel with: ```auto runs.map((row) => row.history["loss"].min) ``` This works when I add the panel on the run page (i.e. `///runs/`). However, when I add the panel on the project page (i.e. `//`), all runs show an empty value. ---
**Author:** ![raphael-sanandres](https://avatars.discourse-cdn.com/v4/letter/r/7cd45c/32.png) [@raphael-sanandres](https://community.wandb.ai/u/raphael-sanandres)\ **Post date:** [February 15, 2023, 8:49pm UTC](https://community.wandb.ai/t/min-loss-using-weave-panel/3874/2 "2023-02-15T20:49:35Z")
Hello Szymon! If you want to compare runs by min loss in the project page, I would recommend making a bar chart panel by going to `Add panel` → `Bar chart` → set the `Metric` to `training/loss.min`. Does this answer your question? ---
**Author:** ![raphael-sanandres](https://avatars.discourse-cdn.com/v4/letter/r/7cd45c/32.png) [@raphael-sanandres](https://community.wandb.ai/u/raphael-sanandres)\ **Post date:** [February 21, 2023, 9:07pm UTC](https://community.wandb.ai/t/min-loss-using-weave-panel/3874/3 "2023-02-21T21:07:11Z")
Hi there, I wanted to follow up on this request. Please let us know if we can be of further assistance or if your issue has been resolved. ---
**Author:** ![szymon-piechowicz](https://sea2.discourse-cdn.com/flex020/user_avatar/community.wandb.ai/szymon-piechowicz/32/1195_2.png) [@szymon-piechowicz](https://community.wandb.ai/u/szymon-piechowicz)\ **Post date:** [March 6, 2023, 9:49pm UTC](https://community.wandb.ai/t/min-loss-using-weave-panel/3874/4 "2023-03-06T21:49:29Z")
That only works if you set the metric aggregation to min, e.g.: ```auto wandb.define_metric("training/loss", summary="min") ``` I did not do that in my run, and I was hoping I could use Weave to perform the aggregation for me. ---
**Author:** ![\_scott](https://sea2.discourse-cdn.com/flex020/user_avatar/community.wandb.ai/_scott/32/95_2.png) [@\_scott](https://community.wandb.ai/u/_scott)\ **Post date:** [March 7, 2023, 12:42pm UTC](https://community.wandb.ai/t/min-loss-using-weave-panel/3874/5 "2023-03-07T12:42:16Z")
You can add a new column and use `row.run.history["loss"].min` ![image](https://us1.discourse-cdn.com/flex020/uploads/wandb/original/2X/c/c0c47df699223fb68f2b07f24fa80492015dc90f.jpeg) ---
**Author:** ![raphael-sanandres](https://avatars.discourse-cdn.com/v4/letter/r/7cd45c/32.png) [@raphael-sanandres](https://community.wandb.ai/u/raphael-sanandres)\ **Post date:** [March 10, 2023, 11:16pm UTC](https://community.wandb.ai/t/min-loss-using-weave-panel/3874/6 "2023-03-10T23:16:10Z")
Hi there, I wanted to follow up on this request. Please let us know if we can be of further assistance or if your issue has been resolved. ---
**Author:** ![system](https://us1.discourse-cdn.com/flex020/uploads/wandb/original/1X/366b649231631dbab896843020da0056074ac79d.png) [@system](https://community.wandb.ai/u/system)\ **Post date:** [May 6, 2023, 12:42pm UTC](https://community.wandb.ai/t/min-loss-using-weave-panel/3874/7 "2023-05-06T12:42:32Z")
This topic was automatically closed 60 days after the last reply. New replies are no longer allowed.