====== Exporting Data & Graphs ======

Mervis SCADA allows you to export the data you are viewing in your graphs. You can download the raw numbers for analysis in Excel/Matlab, save the visual chart as an image for reports, or generate electronic records for compliance purposes.

**Compliance Note:** For regulated environments requiring printable or electronic copies of historical data, use the Table export function below to generate immutable CSV or Excel records.

To access these settings, click the **Export** button located in the Graph view menu.

===== 1. Exporting Data (Table) =====

Use the **Table** tab to download your data as a spreadsheet file (.xlsx, .csv). This is useful if you need to perform your own calculations, keep exact records of sensor data, or prepare data for manual backfilling.

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**Key Settings:**

  * **Aggregation (Export Type):** This is the most important setting. It determines if you get raw data or calculated data.
    * **Aligned:** Exports **raw data** exactly as it is stored in the database. No calculations are made. If a sensor sent a value at 10:03:15, that exact timestamp and value will be in the file. Use this for troubleshooting, exact historical records, or **as a formatting template for manually uploading/backfilling missing data**.
    * **Equidistant:** Exports **calculated data** on a fixed grid (e.g., exactly every 10 minutes). If there is no record for a specific time, the system calculates the value based on the surrounding data. Use this for uniform reports where you need neat, regular rows.
    * **BI:** Exports data in a format optimized for **Business Intelligence** tools. This is a specific structure designed for importing into third-party analytics software.
  * **Interval:** (Visible only for Equidistant aggregation) Defines the time step between rows (e.g., Minute, Hour, Day).
  * **Format:**
    * **.xlsx:** Standard Microsoft Excel file.
    * **.csv:** Comma Separated Values (plain text), compatible with almost any data software. **Note: If you are exporting data to serve as a template for manual CSV uploads (e.g., to backfill data after a PLC connection drop), you must select this format.**
  * **Value Delimiter / Decimal Separator:** (Visible only for CSV) Allows you to customize the file format to match your specific regional settings (e.g., using a comma vs. a semicolon). *Ensure these match your import settings if you plan to re-upload data.*
  * **Decimal Places:** Control how many decimal points are included in the exported values.
  * **Timestamp Precision:** Adjust how precise the time record should be (e.g., down to the second).

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Once you have configured your settings, click **Download**.

===== 2. Exporting Images (Graph) =====

Use the **Graph** tab to save a picture of the chart exactly as it looks on your screen. This is perfect for inserting into emails, presentations, or generating visual compliance reports.

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**Settings:**

  * **Width / Height:** You can specify the exact pixel dimensions for the image. If you leave these blank, it will default to the current size of your browser window.

Click **Download PNG** to save the image file to your computer.

===== 3. Exporting for Matlab =====

Use the **Matlab** tab if you need to process your data using MathWorks Matlab software.

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This option generates a script file that allows you to import your selected data directly into the Matlab environment for engineering analysis.

Click **Generate Matlab script** to download the file.