# Viewing horizontal temperature distribution

>  NOTE: This guide can also be applied to the visualization of any scalar field on horizontal planes.

![](img/4-1-horizontal-scalar-field.png)

##### 1. Open data file.

Open your data file(s), using buttons on the _Home_ menu category of _Menu Bar_.

##### 2. Load the temperature variable and show it on a layer.

In order to visualize the distribution of the variable on a layer, you can either  
* click the _Add Layer_ menu buttons on _Layer_ menu category, and select variable/area/level etc., or 
* select the temperature variable on the _Variables Pane_, and click 'OK' to add layer. 

_Rendering Pane_ will immediately display the distribution, and a new layer will be added to the _Layers Pane_.

##### 3. Change the settings for color mapping (if necessary).

Double click the vertical _Color Bar_ on the right-hand side of _Rendering Pane_. A popup dialog named _'Setup Colormap and Limit Range'_ will show up, where you can change various options regarding the color mapping.

##### 4. Change the visualization settings - contour vs. raster (if necessary).

##### 5. Explore temperature distributions at different altitudes (if any).

On _Horizontal Plane_ menu category of _Menu Bar_, you will find _Vertical Level_ drop-down control, where you can select height level among all the levels available in your dataset. You can also click _Move Up / Move Down_ button in order to increase / decrease the selected level.

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