In addition, openCanvas can be performed to create a database for monitoring the DB and the host. The results of monitoring can be automatically recorded in a "monitoring report", so that the experimenters can be notified instantly and the monitoring results can be uploaded to the user's web space. The convenient and flexible monitoring methods in openCanvas will effectively help the experimenters to monitor the data, debug the host, network, DB and platform.
In the course of the implementation of openCanvas, we also tried to increase the function and the flexibility of the user interface. We made several changes, including adding a panel for the snapshot of the current screen, taking a screenshot and editing the clipboard. The window layout is customizable and can be changed to the configuration preferred by the experimenters. In addition, openCanvas provides a built-in graphical interface. The authors hope that the users will enjoy the open and the fast, visual, interactive and ergonomic interaction with openCanvas.
Visualization of the map {#Sec10}
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The visualization of the map consists of three parts. The map panel, the scale panel and the map screen panel.
First, to see the actual location of the maps, we applied the map panel. The map panel can be switched on and off at the tool bar. When it is switched off, the map screen panel will appear and the scale panel will disappear. When the map panel is switched on, the map screen panel will disappear and the scale panel will appear. The map panel is an HTML5 framework and has a similar function to that of the Google map. The map panel uses the HTML5 client side image maps to display the map. When the map panel is turned on, the top view of the map will be displayed. The parameters of the map can be set by adjusting the panel of the map.
Second, to see the actual scale, we applied the scale panel. The scale panel can be switched on and off at the tool bar. When it is switched off, the map screen panel will appear and the scale panel will disappear. When the scale panel is switched on, the map screen panel will disappear and the scale panel will appear. The scale panel is a pop-up window which allows the users to see the map's size. The scale panel also shows the coordinates of the position and the size of the map.
Third, to display the map on the screen, we applied the map screen panel. When the map
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