# Use different magnetic model

**URL:** <https://community.wolfram.com/t/use-different-magnetic-model/24557>\
**Category:** Questions\
**Tags:** physics, curated-data, geography\
**Created:** [September 14, 2024, 12:46pm UTC](https://community.wolfram.com/t/use-different-magnetic-model/24557 "2024-09-14T12:46:14Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jankolar83](https://avatars.discourse-cdn.com/v4/letter/j/ecae2f/32.png) [@jankolar83](https://community.wolfram.com/u/jankolar83)\
**Post date:** [September 14, 2024, 12:46pm UTC](https://community.wolfram.com/t/use-different-magnetic-model/24557/1 "2024-09-14T12:46:14Z")

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How to specify that I want to use IGRF model instead of automatic when calling GeomagneticModelData ? The help is not clear and it is missing example. I tried various options like following but none of them is correct.

```
geomagneticNorth = GeomagneticModelData["NorthGeomagneticPole", dates, Method->"IGRF"];
geomagneticNorth = GeomagneticModelData["NorthGeomagneticPole", dates, Method->IGRF];

```

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<div class="post-metadata">

**Author:** ![henrikschachner](https://yyz1.discourse-cdn.com/wolfram/user_avatar/community.wolfram.com/henrikschachner/32/32119_2.png) [@henrikschachner](https://community.wolfram.com/u/henrikschachner)\
**Post date:** [September 15, 2024, 6:54pm UTC](https://community.wolfram.com/t/use-different-magnetic-model/24557/2 "2024-09-15T18:54:11Z")

</div>

> … The help is not clear and it is missing example. …

Have a look in the respective documentation on `GeomagneticModelData[]` under “Examples” → “Options” → “Method”. Something like this seems to work:

```
GeomagneticModelData[Here, Now, Method -> ("Model" -> "IGRF")]

```