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| <h1>Cmd History View</h1> |
| |
| <p>The Cmd History View records and displays all R commands that were used |
| during a session. Double clicking on an item from the command history will |
| submit the given line to the R Console again. The copy action copies |
| the text of the selected commands to clipboard.</p> |
| <img style="width: 711px; height: 320px;" alt="Cmd history view overview" src="../images/screenshot_cmd_history_view_overview.png"/> |
| |
| <h2>Cmd History Actions</h2> |
| <p>The Cmd History toolbar and menu provide the following special actions:</p> |
| <img style="width: 270px; height: 171px;" alt="Screenshot cmd history full menu" src="../images/screenshot_cmd_history_full_menu.png"/> |
| |
| <h4>Search bar</h4> |
| <p>The Cmd History search bar (the text field in the toolbar) allows to search |
| for a given command in the command history. On pressing Enter, the first matching |
| result will be highlighted. The arrows right to the search bar allow to navigate |
| to the following and previous search result. You can use the common wildcards |
| * = any string and ? = any char like in other dialogs in Eclipse. |
| Hovering over an item in the command history will highlight the command as well |
| as the exact date and time at which the command was submitted to the R Console.</p> |
| |
| <h4>Scroll-Lock button <img alt="Scroll lock button" src="../icons/loctool/scrolllock.gif"/></h4> |
| <p>The scroll-lock button is a toggle that allows to fix the user's view on |
| the Cmd History at a given location. The lock on scrolling, however, does |
| not prevent the user to manually scroll through the command history.</p> |
| |
| <h4>Load and Save History</h4> |
| <p>R has a mechanism to save and load a command history to a file which is by |
| default named <code>.Rhistory</code>. The options Load History and Save History |
| provide a convenient interface to perform these actions using the Eclipse file |
| browser.</p> |
| |
| <h4>Filter Empty Commands</h4> |
| <p>A command history can contain comment blocks as well as blank lines. In |
| order to hide these lines from the Cmd History view, one can check the |
| Filter Empty Commands option in the menu.</p> |
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