# Colormap, Range, and Isolines


## Customizing Colormaps
Other preset colormaps are accessible by **[left click]** on the colorbar (or **Menu windows** → **settings** → **palette**).
You can change the colors of the palette, their dispositions, etc., and apply your changes using the **Status box** → ✓ mark.


## Adjusting Range and Distribution
To change the range and the distribution of the colorbar ticks:
1. **[Left click]** on the value labels to open the **Display settings window**.
2. Use the menu **"Isovalues..."** and the text box below:

> - **Two values**: Indicate the minimum and maximum.
> - **More than two values**: Uniformly distribute these isolines along the colorbar, regardless of their value (non-linear ticks).
> - **%[0-100]**: For the percentile of the displayed value.
> - **\*[dx]**: Between minimum and maximum, sets the step between isolines (dx).
> - **/[nx]**: Between minimum and maximum, sets the number of isolines (nx).

Edit the thickness and the color of the isolines in this text box as well.

*TIPS*: You can define h1 = h to define different line style and distribution to get major isolines with h and minor isolines with h1. 


## Adding Additional Isolines
For additional isolines (e.g., bathymetry isolines on top of the currently displayed field):
1. **Menu windows** → **formulaAndIso** → `h`.
2. Assign this new variable to the dedicated field.
3. Select this variable in the **formulaAndIso** menu.
4. **View window** → **display** → **selected formula variable settings...**



![Isolines and Colormap Settings](../../_static/colormap.jpg)