Connection to MarsSI
The application is open to the scientific community via the website: marssi.univ-lyon1.fr.
A login and a password are required. To create an account, a request has to be made via the contact form. We will create for you both a personal account on MarsSI. Your credentials will be emailed back to you and they are the same for the access to the MarsSI application, the wiki and to the SFTP server.
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MarsSI homepage
There are 3 tabs corresponding to 3 environments:
- the “Maps” tab for data visualization and selection
- the “Workspace” tab to list selected data and request processing
- the “Jobs” tab shows information about data processing
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"Map" tabs
The Map tab present a geographic view with a set of map tools and a layer button. It will help you to select the observation you desire and add them to your cart for further processing.
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When you click on the layers button, it will expand into the list of available layers. This list is divided in two groups. The first is the background layers list, which select which map to display in your view. The default map correspond to the Mars Orbiter Laser Altimeter (MOLA) topographical map of Mars. Other layers are available, such as the THermal EMIssion Spectrometer (THEMIS) day infrared global map. You can only select one background layer at a time. The other group list the acquisitions/products made available from the various missions including Mars Reconnaissance Orbiter (MRO), Mars Express (MEx) and Mars Odyssey (MO). Those products are only displayed in footprint shapes over the map, but you can display more than one of them. See the various data sections to learn more about those datasets.
The map tools provides you with a few controls: you can zoom in and out using the buttons (or mouse wheel). The "select area" control will allow you to draw a rectangle and select products from the displayed dataset layers. You can repeat this operation to add more products to your selection. You can then right-click to either erase your selection or send it to your workspace where you will be able to perform more actions (see Workspace section). You can also use the measure tool to perform some distance measurements on the map. Finally, if you want to display information about a dataset, simply click on it to have a popup with its attributes displayed.
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If you want to search through observations based on geographic information or attributes click on “Search”. You have different options. The first option is by geographic information. You can draw an area using a point, line or polygon or you can zoom-in the current selection. The second option is by attributes. Select the type of layers/observations, an attribute which can be the target name, the id, the latitude, the longitude, the geometric angles etc., then the operator “contains”,“equal to” or “not equal to” and finally the value. You can add several attributes by clicking on the plus button.
To process one or several images, you have to add them into the “Cart” window by selecting the observation and clicking on the “Add” button. You can remove one or several observation(s) just by clicking on it in the “Cart” window and on the “Remove” button.
"Workspace" tab
When you are done exploring and selecting data, click on the "Workspace" tab. Here, the data you are interested in will be displayed in a table with 3 columns:
- Datasets: the global identifier for an acquisition
- Products: the dataset can be divided or processed into multiple products
You can adjust the number of dataset liste in one page, or change pages as needed. You can select dataset by either ticking the checkbox on the left of their row, or use the "Select all" and "Select none" buttons.
On the top of the tab, you have three action button:
- Remove: the selected datasets are removed from your workspace (but it is still in MarsSI catalog!)
- Process: request the selected datasets to be processed
- Copy: request to copy the dataset to your personnal SFTP directory
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Choose the data which have to be processed in the “Data to process” window and click on the “Process” button. Then the data will be visible on the “Data under processing” window, that means that the data is processing.
Then, when the data is processed, it will be visible on the “Data processed” window. Do not hesitate to click on the “Refresh” button to refresh the windows. To save your final products on your account when the data processing is done, click on the “Copy” button Then you can retrieve your products via the SFTP server. Again, enter your name and password (same as your account to connect to MarsSI) and download your final products. Find the right repertory corresponding to the selected data type and download the derived products on your hard-disk.
"Jobs" tab
The job tab allow you to follow your processing request statuses.
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Log out
If you need to logout of MarsSI, click the "Log out" link at the top-right corner of the window. Your workspace is saved accross logins and any processing queued or running will be processed when possible.