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### Explore
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The explore workspace is where the interactive data visualization takes place. It is divided into 3 areas:
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* **A plot** area on the top left of the screen. By default, this shows a scatterplot of the variables selected in the data input section. If columns for plates and wells have been selected, a plate viewer is also available. Clicking on a data point in the plot or a well in the plate viewer selects it in the data table below and opens the corresponding image(s). If the point is associated with x,y coordinates then a red dot is added to the image(s) at the position given by these coordinates. If a group column has been selected, the corresponding labels will be shown in the plot legend. Clicking on items in the legend will hide/show the corresponding points. Note that the plate viewer shows median values per well.
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* **A plot** area on the top left of the screen. By default, this shows a scatterplot of the variables selected in the data input section. The other plot types apply to the first selected variable. If columns for plates and wells have been selected, a plate viewer is also available. Clicking on a data point in the scatterplot or a well in the plate viewer selects it in the data table below and opens the corresponding image(s). If the point is associated with x,y coordinates then a red dot is added to the image(s) at the position given by these coordinates. If a group column has been selected, the corresponding labels will be shown in the plot legend. Clicking on items in the legend will hide/show the corresponding points. Note that the plate viewer shows median values per well.
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* **An image viewer** area next to the plot area. This is where images selected under image 1 in the data input section will appear.
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Clicking on the image selects the corresponding row in the data table and highlights the corresponding point in the plot. If rows correspond to ROIs then the click position is indicated by a red dot and the data point corresponding to the closest ROI in the image is selected in both the data table and the plot. Pressing the shift key while clicking anywhere on the image enters the multiple selection mode where each subsequent shift+click is recorded and indicated by a cyan dot. Clicking anywhere on the image without pressing shift exits the multiple selection mode. Clicking in a region of the image with no corresponding data points results in the deselection of the previously selected data points. When zoomed in, the keyboard arrow keys can be used to move the field of view. A list of actions available in the image viewer is available by pressing h.
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* **A data table** area at the bottom of the screen. The data table shows the content of the uploaded data file. A tab allows switching to a second image viewer where images selected under image 2 in the data input section will appear. This second image viewer behaves like the one described above. Clicking on a table row selects it and highlights the corresponding point in the plot and in the image viewers. No image is shown when selecting multiple rows unless the corresponding objects belong to the same image. The table is searchable globally using the 'Search' box in the top right corner above the table or by column using the boxes atop each column. Searches filter the rows to be displayed in the table. To select all the rows and highlight them in the plot, click the button labeled 'Show filtered rows in plot' above the table. To deselect all selected rows, click the 'Clear selection' button. To annotate the selected rows, click the 'Annotate selection' button. This is only available if an annotation column has been chosen in the 'Annotate' section.
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A tab allows switching to a **gallery viewer**. The gallery viewer tiles selected objects in one image. When the selected objects are whole images, the tiles are thumbnails of the original images.
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* **A data table** area at the bottom of the screen. The data table shows the content of the uploaded data file. A tab allows switching to **a second image viewer** where images selected under image 2 in the data input section will appear. This second image viewer behaves like the one described above. Clicking on a table row selects it and highlights the corresponding point in the plot and in the image viewers. No image is shown when selecting multiple rows unless the corresponding objects belong to the same image. The table is searchable globally using the 'Search' box in the top right corner above the table or by column using the boxes atop each column. Searches filter the rows to be displayed in the table. To select all the rows and highlight them in the plot, click the button labeled 'Show filtered rows in plot' above the table. To deselect all selected rows, click the 'Clear selection' button. To annotate the selected rows, click the 'Annotate selection' button. This is only available if an annotation column has been chosen in the 'Annotate' section.
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### Annotate
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Individual data points, i.e. rows of the data table, can be associated with a label. Annotation starts by visiting the 'Annotate' workspace (accessible from the sidebar). There, a column to hold the annotations can be selected and labels defined. If an existing column is selected, its distinct values will be available as labels. New labels can also be added. Alternatively, a new column can be created, in which case, new labels must be provided. New labels must be entered as a comma-separated list. Once done, choices must be confirmed by clicking the 'Apply' button. Annotations can then be performed using the 'Annotate selection' button in the 'Explore' workspace.
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