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[← Previous chapter](https://git.ad5001.eu/Ad5001/LogarithmPlotter/wiki/User-Manual:-Chapter-0) | Chapter 1: The Interface ([≡ Index](User-Manual)) | [Next chapter →](https://git.ad5001.eu/Ad5001/LogarithmPlotter/wiki/User-Manual:-Chapter-2)
# The Interface
## First start
![Image of the first start screen of LogarithmPlotter](https://apps.ad5001.eu/img/en/logarithmplotter/welcome.png)
When LogarithmPlotter starts for the first time or when it's been updated, you will be greeted by a screen similar to this one. It allows you to see the changelog, as well as configure the global options of LogarithmPlotter.
- "Check for updates on startup" does exactly what it sounds like. If enabled, LogarithmPlotter will check if a new version has been released everytime it starts up.
- "Reset redo start when a new action is added to history": if disabled, if you go to a previous section of the [history](#History) and make a change, the more recent change won't be overwritten.
Note that all of those settings can be changed at any moment from the "Settings" menu at the top of the window.
## Overview of the main interface
![Image of the main interface of LogarithmPlotter](https://apps.ad5001.eu/img/en/logarithmplotter/empty.png)
The main interface of LogarithmPlotter is divided into 2 sections, the side bar on the left, and the graph on the right.
The sidebar allows you to modify the diagram and interact with objects while the graph is where you see your changes and objects applied.
The sidebar is composed of 3 tabs: Objects, Settings and History each of which will be explained in sections below.
## Objects tab
![Image of the objects tab in an example graph](https://apps.ad5001.eu/img/en/logarithmplotter/objects.webp)
The Object tab allows you to interact, create and delete with the objects of the graph.
It is composed of two parts, the objects lists, and the object creation grid.
To create an object, you can click one of the buttons at the bottom of the tab, and it will open a [object property editor](#Editing-object-properies) for that object.
You can reopen it at any time by clicking on the row associated with the object you want to edit.
On that row, you can:
- Show or hide the object, by clicking the checkbox at the beginning.
- (On objects that can be repositionned) Reposition the object by clicking on the "Position" button.
- Delete the object using the "trash" button.
- Change the color of the object by clicking on the colored circle at the end of the line.
## Settings tab
![Image of the settings tab](https://apps.ad5001.eu/img/en/logarithmplotter/settings.webp)
The Settings tab allows you to change how the diagram looks, and parameter the axes properly. It also features a few buttons you can also find in the menu bar.
List of settings:
- X Zoom:
- The zoom alongside the x-axis.
- Default value is 100.
- For non logarithmic scales, the number of pixels for a unit of 1.
- For logarithmic scales, represent one decade divided by 2.3.
- Y Zoom:
- The zoom alongside the ordinate, equivalent to the number of pixels for a unit of 1.
- Default value is 10.
- Min X:
- Minimum value to be drawn on the x-axis. In other words, it's the value of x on the left side of the graph.
- Default value is 0.5
- Max Y:
- Maximum value to be drawn on the y-axis. In other words, it's the value of y at the bottom of the graph.
- Default value is 25
- Max X:
- Minimum value to be drawn on the x-axis. In other words, it's the value of x on the right side of the graph.
- This value is dynamic depending on the width of the LogarithmPlotter window as well as the x zoom you've chosen.
- Setting this value will change the value of the x zoom to fit exactly to the specified dimensions.
- Min Y:
- Minimum value to be drawn on the y-axis. In other words, it's the value of y at the top of the graph.
- This value is dynamic depending on the height of the LogarithmPlotter window as well as the y zoom you've chosen.
- Setting this value will change the value of the y zoom to fit exactly to the specified dimensions.
- X Axis Step:
- Only for non logarithmic scale
- Step of the graduation for the x-axis.
- This value is an expression, you can use pi or e in it.
- Default value is 4.
- Y Axis Step:
- Step of the graduation for the y-axis.
- This value is an expression, you can use pi or e in it.
- Default value is 4.
- Line width:
- Width (percentage) of the the lines and circles of objects shown on the graph.
- For lines, it's directly the width of the line
- For circles, the diameters are 8 + 2 × line width.
- Default value is 1.
- Text size (px):
- Size in pixel of the text shown on the graph.
- Default value is 14.
- X Label:
- Label to be used on the x-axis
- Example: "x", "ω (rad/s)"...
- Editable, you can put any value you want, while maintaining an history of the previously used labels
- Note: this history is not saved with the file.
- Empty by default
- Y Label:
- Label to be used on the y-axis
- Example: "y", "Magnitude (dB)", "φ (°)", "φ (rad)", "φ (deg)" ...
- Editable, you can put any value you want, while maintaining an history of the previously used labels.
- Note: this history is not saved with the file.
- X Log Scale:
- When checked, the x-axis is represented with a logarthmic scale, otherwise, it's represented with a non logarithmic scale.
- Show X gradiation:
- When checked, will show the labels alongside the x-axis (10¹, 10², ...). Otherwise, they will be hidden.
- Show Y gradiation:
- When checked, will show the labels alongside the x-axis (0, 4, ...). Otherwise, they will be hidden.
List of the buttons:
- Copy to clipboard:
- Copies an image of the graph to the clipboard.
- Save plot:
- Saves the plot in the currently opened file, or prompts you to pick a location if non are open...
- Save plot as:
- Prompts you to choose a location to save the plot at, and saves it.
- Load plot/Open plot:
- Prompts you to choose an existing LogarithmPlotter diagram file and opens it in the current window.
- **IMPORTANT**: All unsaved changes to the previous diagram WILL BE LOST if you open a new one.
## History tab
![Image of the history tab](https://apps.ad5001.eu/img/en/logarithmplotter/history.webp)
The history tab allows you to see the historical progression of graph broken down in "actions" pretaining to objects. The list in itself is read from top to bottom, from most recent to most ancient.
The "Now" represents the point in history in which the graph is.
Any action that happened before now are in the "Undo" section of the history, under the "Now". Similarly, the actions that happened after the now are in the "Redo" scection, above the "Now".
**Note**: You can hover the actions with your mouse to see more details about them.
If you want to undo/redo any action, click on it and it will undo/redo it after undoing/redoing the action in between them and the now.
There exists 7 types of actions:
<table>
<thead>
<tr>
<th>Symbol</th>
<th>Type</th>
<th>Occurance</th>
<th>Color (Light|Dark theme)</th>
</tr>
</thead>
<tbody>
<tr>
<td><img src="https://git.ad5001.eu/Ad5001/LogarithmPlotter/raw/branch/master/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/icons/history/create.svg" alt="plus sign"></td>
<td>Object creation</td>
<td>When a new object is created</td>
<td><img src="https://api.ad5001.eu/svg/colors/?c1=lime&c2=green" alt="lime/green"></td>
</tr>
<tr>
<td><img src="https://git.ad5001.eu/Ad5001/LogarithmPlotter/raw/branch/master/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/icons/history/delete.svg" alt="cross sign"></td>
<td>Object deletion</td>
<td>When an existing object is deletion</td>
<td><img src="https://api.ad5001.eu/svg/colors/?c1=salmon&c2=darkred" alt="salmon/dark red"></td>
</tr>
<tr>
<td><img src="https://git.ad5001.eu/Ad5001/LogarithmPlotter/raw/branch/master/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/icons/history/visibility.svg" alt="Eye sign"></td>
<td>Show/hide object</td>
<td>When an object's is shown or hidden</td>
<td><img src="https://api.ad5001.eu/svg/colors/?c1=whitesmoke&c2=darkgray" alt="whitesmoke|darkgray">, <img src="https://api.ad5001.eu/svg/colors/?c1=lightgray&c2=dimgray" alt="light gray/dim gray"></td>
</tr>
<tr>
<td><img src="https://git.ad5001.eu/Ad5001/LogarithmPlotter/raw/branch/master/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/icons/history/modify.svg" alt="Double arrow sign"></td>
<td>Modify object</td>
<td>When an object's property is changed</td>
<td><img src="https://api.ad5001.eu/svg/colors/?c1=cyan&c2=darkslateblue" alt="cyan/dark slate blue"></td>
</tr>
<tr>
<td><img src="https://git.ad5001.eu/Ad5001/LogarithmPlotter/raw/branch/master/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/icons/common/label.svg" alt="Label sign"></td>
<td>Rename object</td>
<td>When an object's name is changed</td>
<td><img src="https://api.ad5001.eu/svg/colors/?c1=orange&c2=darkorange" alt="orange/dark orange"></td>
</tr>
<tr>
<td><img src="https://git.ad5001.eu/Ad5001/LogarithmPlotter/raw/branch/master/LogarithmPlotter/qml/eu/ad5001/LogarithmPlotter/icons/common/appearance.svg" alt="Appearance sign"></td>
<td>Coloring the object</td>
<td>When an object's color is changed</td>
<td><img src="https://api.ad5001.eu/svg/colors/?c1=plum&c2=purple" alt="plum/purple"></td>
</tr>
</tbody>
</table>
You can also filter the actions of the history by using the "Filter..." search bar.
**Note**: The changes in the settings tab are not kept in the history tab. This feature may come to a future version of LogarithmPlotter.
[Next chapter →](https://git.ad5001.eu/Ad5001/LogarithmPlotter/wiki/User-Manual:-Chapter-2)