Logilab ELN - Method Master Setup

Method master screen helps to add, edit and retire methods. You can select instrument for the method and add the raw data file to be parsed.

1.1.1 Adding a Method

1. On the main menu click Method Setup and then click Method MasterThe Method Master screen appears as shown in the figure:

FIGURE: Method Master Screen

In the Method master screen, you can see the list of methods added.  

1. Click Add. The add method screen appears as shown in the figure:

FIGURE: Add Method Screen

2. In the Method Namefield, type the method name you want to add.
3. In the Instrument Namefield, select the instrument for the method. Only instruments with the Instrument Used option enabled will appears here.
4. In the File Namefield, add the raw data file to be parsed. Click Choose File, in the Open file dialog locate the raw data file and then click Open.
5. Click Submit.

 The method is added to the method master. Once you add the method you can see that the Sample Split and Parser Setup fields appear as blank until you setup sample split and parser setup using the options as shown in the figure:

FIGURE: Method Master Sample Split and Parser Setup Options

1.1 Sample Split

Sample split option enables remove or exclude unwanted data / data blocks from the raw data to enable parsing. You can mark header and footer, remove unwanted data blocks and extract required data from the raw data file.

To sample split the raw data, follow these steps:

1. In the Method master screen, select a method, click Methodand then click Sample Split as shown in the figure:

FIGURE: Using Sample Split Option

The Sample Split screen appears as shown in the figure:

FIGURE: Sample Split Screen

The raw data is loaded from the file. You can use the following options to mark header, footer, remove unwanted data/blank space, mark data blocks etc.

Header: Define the header. Select data for header.

Footer: Define the footer, Select data for footer.

Remove: Remove unwanted data/data blocks from raw data

Extract: Mark data blocks to enable parser setup.

1.1.1 Marking Header / Footer / Removing Unwanted Data and Extracting Required Data

You can mark header / Footer / data to be removed and data to be extracted in the raw data file using any one of the following methods:

1.1.1.1 Lines between begin and end text.

1. Select begin text and then click Get to mark the beginning of the text. Select end text and then click Getto mark end of data.
2. Click to select Repeatoption to extract data for each occurrence/page.

1.1.1.2 Top and bottom lines from center text

1. Select a text, and then click Get that appears near the Center Text
2. Then type number of top lines and number of bottom lines to be extracted as header/footer/remove/ data from the selected center line.
3. In the Top Lines field type number of lines to be selected from the current line.
4. In the Bottom-Line field type number of lines to be selected from the current line
5. Click to select Repeat option to extract selected header for each occurrence/page.
6. Click to check the Exclude option to exclude the center line. When this option is selected, the top and bottom lines mentioned are extracted/removed except the center line.
7. Clickto switch between header/footer/removed data/extracted data as shown in the figure:

FIGURE: Switch between Header / Footer / Raw Data / Removed Data

1.1.2 Marking Header

Follow the onscreen instructions to mark header in the raw data:

FIGURE: Sample Split – Marking Header

1.1.3 Marking Footer

Follow the onscreen instructions to mark footer in the raw data:

FIGURE: Sample Split – Marking Footer

1.1.3.1 Removing Unwanted Data from Raw Data

You can remove unwanted data and blank lines from the raw data. To do so, follow these steps:

1. To remove the highlighted text and blank lines in the top and bottom of the text as shown in the figure:

FIGURE: Removing unwanted Data and Blank Lines 1

Follow the onscreen instructions:

FIGURE: Removing unwanted Data and Blank Lines 2

8. Same way, you can mark to remove other unwanted data and blank lines in the raw data file.
9. You can edit or delete the mark if required.
10. After marking all data and blank lines to remove, click and then select Updated Data. Data after removing the unwanted data and blank lines appears.

1.1.3.2  Marking Data Blocks

1. You can extract data blocks. If you have marked the header and footer, then the header and footer will appear as data blocks. In addition, you can mark data blocks to manage data in parser setup as shown in the figure:

FIGURE: Marking Data Blocks

1.1.4 Viewing Data Blocks

6. Click and then click Extracted Block. The data blocks extracted appears as shown in the figure:

FIGURE: Viewing Extracted Data Block

11. Click Prev Block / Next Block  to view previous and next blocks.

1.1.4.1 Marking Sample Blocks

Sample blocks are marked inside the extracted blocks. Select an extracted block and then mark the sample block.

To mark a sample block, follow these steps:

1. In the extracted block, select a match text and then click Get as shown in the figure:

FIGURE: Marking Sample Block Using Match Text

Or you can split the data block into equal parts by typing the number of lines in the Absolute Lines field.

12. Click Absolute Lines. In the absolute linesfield, type number of lines from the match text selected, to make a sample block as shown in the figure:

FIGURE: Marking Sample Block Using Absolute Lines Option

A sample block is added starting from the match text with the number of lines specified in the absolute lines field.

Same way, you can add more sample blocks in the data block as shown in the figure:

FIGURE: Sample Blocks Added

1.1.4.2 Viewing Extracted Samples

1. Click and then click Extracted Sample as shown in the figure:

FIGURE: Viewing Extracted Sample

13. Click Prev Sample/ Next Sample to view previous and next samples extracted.
14. Click Submit to save the sample split.

Once sample split is done, the Sample Split field value in the Method Master appears as “ Done” as shown in the figure:

FIGURE: Sample Split Field Appears as “Done”