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• Pie charts that show fields from the investigations. When you first open the page or reset it to clear all selections, three pie charts appear at the top. These pie charts represent three of the fields, Study Protocol Name, Study Assay Technology Type, and Study Assay Measurement Type, that occur in the metadata of the 8 investigations currently in the portal (as of January 2017). The values for those fields, as well as a count for each value, appear in the pie charts. The count represents the number of times that field value occurs in all of the investigations currently in the portal.
  
  For example, in the default pie charts represented in the above screenshot, the Study Assay Measurement Type pie chart shows that 1 investigation used genome sequencing, 6 used imaging assay, and 2  used transcription profiling. Note that there are 9 field values and only 8 investigations because 1 investigation listed 2 values for Study Assay Measurement Type. You can determine which investigation that was by clicking on each pie slice and reviewing the details in the list below.
  
  Click one or more field values in the pie charts ("slices") to filter the data by that/those field value(s). The more field values you select, in one or more pie charts, the more narrowly you filter the investigation data and the fewer investigations match your selections. The investigation list refreshes each time you filter the data in this way. You can also customize which fields appear in the pie charts and how many pie charts appear by adding and removing fields.
  
  In the following screenshot, a user has selected at least one field value in each pie chart. The selected values are sample collection and summarize trimmed reads in the Study Protocol Name chart, nucleotide sequencing in the Study Assay Technology Type chart, and genome sequencing in the Study Assay Measurement Type chart. Only one investigation matches all of these selections and appears in the list below. To reduce the amount of filtering, you can click Reset All to return to the default pie charts, or reset on an individual pie chart. You can also return to the default view by selecting Investigations > Browse.
  
  
  
  

• A list of investigation details below the pie charts. The investigation Investigations list shows details associated with the investigations that match your pie chart selections. For example, in the following screenshot, a user has selected one field value in the Study Protocol Name pie chart: plate cells. The number 4 next to the label plate cells means that four investigations are associated with the Study Protocol Name field value of plate cells. Those four have a null value for Study Assay Technology Type, which is the second pie chart, and all use the same Study Assay Measurement Type of imaging assay.
  
  The list below the pie charts fields in the Investigations list match the pie chart selections. The list includes only those 4 investigations that have a Study Protocol Name field value of plate cells. Details for each investigation in the list includes the same fields represented by the pie charts: Study Protocol Name, Study Assay Technology Type, and Study Assay Measurement Type, plus the study name and description. The list also shows additional data about each investigation, such as the other keywords used in the Study Protocol Name field. You can return to the default (full) list at anytime by selecting Investigations > Browse.

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  If you have added add or removed remove fields from the pie charts, the new or removed fields are also reflected in the Investigation list fieldsInvestigations list fields immediately reflect the same changes.

  
  
  

Adding and Removing Fields

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1. On the Browse Investigations page, click .
   The Select menu appears to the left of the pie charts.
   

2. Expand fields by clicking the plus signs. Note that in the STUDY PROTOCOLS and Study Assays section, the field values of Study Protocol Name, Study Assay Technology Type, and Study Assay Measurement Type are already selected. These field values are the ones that appear in the three default pie charts on the Browse Investigations page. If you clear these check boxes, those pie charts will disappear from the page. When you reset all of the pie charts or select Browse > Investigations, however, they reappear.

   
   

3. Click any of the field values to select them. For example, select Study Protocol Type.
   The pie charts immediately update to reflect the selection and a fourth pie chart appears on the Browse Investigations pageinclude one for Study Protocol Type.
   
   
   You could also opt to clear all of the check boxes except for Study Protocol Type. In this case, that is the only pie chart that would appear.
   

   InfoIf you add or remove a pie chart, the change is also reflected in the Investigation Note to CKK: Update screenshot with annotation showing change in list fields.
4. When you have selected or cleared as many fields as you want to use want from the pie charts, click Image Added.
   The Select menu moves back to its original position.
   Note to CKK: add note here about how all of this selection is actually a way to filter the investigation data, click Image Removed.
   The Select menu moves back to its original position.

Exploring Investigation Details

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1. Filter a study or an assay until you reach a selection of investigation data you are interested in downloading.
2. Click Download Selected Data.
   If the data you want to download exceeds 30 GB, a message appears, instructing you to reduce the file size by further filtering the data.
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3. If you are still interested in downloading your selection, enter your email address in the box and click the I'm not a robot box to request the data download.

   
   Image Removed

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   Although an investigation's full data download usually results in a larger file than 30 GB, due to technical issues, a request is only required when you want to download selected data.