# dryBulbTemperature input does not contain valid temperature values

**URL:** <https://discourse.ladybug.tools/t/drybulbtemperature-input-does-not-contain-valid-temperature-values/13982>\
**Category:** ladybug-tools\
**Created:** [April 7, 2021, 11:52pm UTC](https://discourse.ladybug.tools/t/drybulbtemperature-input-does-not-contain-valid-temperature-values/13982 "2021-04-07T23:52:39Z")\
**Posts on this page:** 10\
**Page:** 1

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**Author:** ![zahra.esmzde](https://discourse.ladybug.tools/letter_avatar_proxy/v4/letter/z/65b543/32.png) [@zahra.esmzde](https://discourse.ladybug.tools/u/zahra.esmzde)\
**Post date:** [April 7, 2021, 11:52pm UTC](https://discourse.ladybug.tools/t/drybulbtemperature-input-does-not-contain-valid-temperature-values/13982/1 "2021-04-07T23:52:39Z")

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Hi! I run Ladybug\_Psychrometric Chart component but it shows two errors:

1. \_dryBulbTemperature input does not contain valid temperature values.
2. \_relativeHumidity input does not contain valid value.  
Can someone please help me?  
 ![Psychro](https://discourse.ladybug.tools/uploads/default/original/3X/8/5/85b02bc343ba3df353a889cd5b6d500721e43ccd.png)

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**Author:** ![Asisnath](https://discourse.ladybug.tools/user_avatar/discourse.ladybug.tools/asisnath/32/27788_2.png) [@Asisnath](https://discourse.ladybug.tools/u/Asisnath)\
**Post date:** [April 8, 2021, 1:31am UTC](https://discourse.ladybug.tools/t/drybulbtemperature-input-does-not-contain-valid-temperature-values/13982/2 "2021-04-08T01:31:59Z")

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Hi @zahra.esmzde . You are mixing Ladybug legacy components with LBT 1.2 veraion. Use psychrometric chart of legacy version.

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**Author:** ![zahra.esmzde](https://discourse.ladybug.tools/letter_avatar_proxy/v4/letter/z/65b543/32.png) [@zahra.esmzde](https://discourse.ladybug.tools/u/zahra.esmzde)\
**Post date:** [April 8, 2021, 1:53am UTC](https://discourse.ladybug.tools/t/drybulbtemperature-input-does-not-contain-valid-temperature-values/13982/3 "2021-04-08T01:53:29Z")

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Thank you @Asisnath for your help. I used the Psychrometric chart of LB-Legacy and now it shows another error.

 ![mm](https://discourse.ladybug.tools/uploads/default/original/3X/c/a/ca99dc2caa50fbf4a27e2598fb67cfb314e2f372.png)

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**Author:** ![Asisnath](https://discourse.ladybug.tools/user_avatar/discourse.ladybug.tools/asisnath/32/27788_2.png) [@Asisnath](https://discourse.ladybug.tools/u/Asisnath)\
**Post date:** [April 8, 2021, 2:38am UTC](https://discourse.ladybug.tools/t/drybulbtemperature-input-does-not-contain-valid-temperature-values/13982/4 "2021-04-08T02:38:52Z")

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You can refer to this [https://discourse.ladybug.tools/t/psychrometric-chart-desnt-show-comfort-polygon/7053](https://discourse.ladybug.tools/t/psychrometric-chart-desnt-show-comfort-polygon/7053) post.

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**Author:** ![zahra.esmzde](https://discourse.ladybug.tools/letter_avatar_proxy/v4/letter/z/65b543/32.png) [@zahra.esmzde](https://discourse.ladybug.tools/u/zahra.esmzde)\
**Post date:** [April 8, 2021, 2:45am UTC](https://discourse.ladybug.tools/t/drybulbtemperature-input-does-not-contain-valid-temperature-values/13982/5 "2021-04-08T02:45:32Z")

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Thank @Asisnath. I updated both HB and LB and it still didn’t work. Then I used LB installed in Rhino 6 and it again showed this error.

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**Author:** ![Asisnath](https://discourse.ladybug.tools/user_avatar/discourse.ladybug.tools/asisnath/32/27788_2.png) [@Asisnath](https://discourse.ladybug.tools/u/Asisnath)\
**Post date:** [April 8, 2021, 2:47am UTC](https://discourse.ladybug.tools/t/drybulbtemperature-input-does-not-contain-valid-temperature-values/13982/6 "2021-04-08T02:47:34Z")

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I can suggest you to switch to Lbt 1.2 version Pyschrometric chart workflow (no legacy component).

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**Author:** ![zahra.esmzde](https://discourse.ladybug.tools/letter_avatar_proxy/v4/letter/z/65b543/32.png) [@zahra.esmzde](https://discourse.ladybug.tools/u/zahra.esmzde)\
**Post date:** [April 8, 2021, 3:08am UTC](https://discourse.ladybug.tools/t/drybulbtemperature-input-does-not-contain-valid-temperature-values/13982/7 "2021-04-08T03:08:33Z")

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![ss](https://discourse.ladybug.tools/uploads/default/original/3X/7/1/71950096dd8b8207c0d18bb3e781d0668b4d9e14.png)  
@Asisnath Could you please let me know how to visualize the psychrometric chart in this way?

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**Author:** ![zahra.esmzde](https://discourse.ladybug.tools/letter_avatar_proxy/v4/letter/z/65b543/32.png) [@zahra.esmzde](https://discourse.ladybug.tools/u/zahra.esmzde)\
**Post date:** [April 8, 2021, 3:11am UTC](https://discourse.ladybug.tools/t/drybulbtemperature-input-does-not-contain-valid-temperature-values/13982/8 "2021-04-08T03:11:38Z")

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@Asisnath I also want to test passive strategies. Could you please help me with that too?

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<div class="post-metadata">

**Author:** ![Asisnath](https://discourse.ladybug.tools/user_avatar/discourse.ladybug.tools/asisnath/32/27788_2.png) [@Asisnath](https://discourse.ladybug.tools/u/Asisnath)\
**Post date:** [April 8, 2021, 3:50am UTC](https://discourse.ladybug.tools/t/drybulbtemperature-input-does-not-contain-valid-temperature-values/13982/9 "2021-04-08T03:50:08Z")

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You can check this example for your reference.[psychrometric\_chart\_example.gh](https://discourse.ladybug.tools/uploads/short-url/hN4F75Z2eRAcNdHXYW1NqG6kSZR.gh) (48.6 KB)

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<div class="post-metadata">

**Author:** ![zahra.esmzde](https://discourse.ladybug.tools/letter_avatar_proxy/v4/letter/z/65b543/32.png) [@zahra.esmzde](https://discourse.ladybug.tools/u/zahra.esmzde)\
**Post date:** [April 8, 2021, 4:00am UTC](https://discourse.ladybug.tools/t/drybulbtemperature-input-does-not-contain-valid-temperature-values/13982/10 "2021-04-08T04:00:24Z")

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@Asisnath Thank you very much! I really appreciate your help.