SeaWiFS Primary Data Product Generation Programs

Generate L1A file from L0 file (l1agen_seawifs)

1. Start the l1agen_seawifs Main Widget:
• in menu mode, select Process -> SeaWiFS -> l1agen_seawifs from the SeaDAS main menu, OR
• in command mode, enter l1agen_seawifs.
2. Enter '$SDSDEMO/L0_hrpt1.dat' in the Input L0 file field.
3. Enter the directory for the output file in the Output directory field.

NOTE: The name of the output file is assigned automatically by the program depends on the input file.
4. Click the Submit button to submit the program as a UNIX background job, OR

click the Run button to start the program in foreground and wait.
NOTE: This program is primarily for HRPT stations, since NO Level-0 data will be archived and distributed by the Goddard DAAC. See additional information on navigation files which must be kept up-to-date.
5. Click the Quit button to quit this program.

• Generate the L1A HRPT file under the current directory with the L0 HRPT file '$SDSDEMO/L0_hrpt.dat'.

l1agen_seawifs, ifile="$SDSDEMO/L0_hrpt1.dat", outdir="./"

Generate L1B file from L1A (GAC, LAC, HRPT) file (l1bgen)

1. Start the l1bgen Main Widget:
• in menu mode, select Process -> SeaWiFS -> l1bgen from the SeaDAS main menu, OR
• in command mode, enter l1bgen.
2. Enter '$SDSDEMO/L1_gac1.hdf' in the Input L1A file field.
3. Enter the L1B output file name in the Output L1B file field.
4. Update, if necessary, the default input parameter values in the Input parameters and values field.
5. Save or load, optional, all the input parameters to or from a parameter file:
• enter the parameter file name to be saved to or loaded from in the Parameter file field.
• press the Option button and select Save or Load from the drop down menu.
NOTE: the parameter file saved here may also be used in the command mode.
6. Click the Submit button to submit the program as a UNIX background job, OR

click the Run button to start the program in foreground and wait.
7. Click the Quit button to quit this program.

• Generate the L1B GAC file 'L1b_gac1.hdf' from the L1A GAC file '$SDSDEMO/L1_gac1.hdf with all default input parameters.

l1bgen, ifile="$SDSDEMO/L1_gac1.hdf", ofile="L1b_gac1.hdf"

Generate L2 file from L1A (GAC, LAC, HRPT) file (l2gen)

1. Start the l2gen Main Widget:
• in menu mode, select Process -> SeaWiFS -> l2gen from the SeaDAS main menu, OR
• in command mode, enter l2gen.
2. Enter '$SDSDEMO/L1_gac1.hdf' in the Input L1A file field.
3. Enter the L2 output file name in the Output L2 file field.
4. Update, if necessary, the pixel and line range and subsampling.
5. Update, if necessary, the default options and threshold values for flags and masks.
6. Enter or update, if necessary, the file names for ancillary data (MET and OZONE), calibration table, land mask, and shallow water mask.
7. Save or load, optional, all the input parameters to or from a parameter file:
• enter the parameter file name to be saved to or loaded from in the Parameter file field.
• press the Option button and select Save or Load from the drop down menu.
NOTE: the parameter file saved here may also be used in the command mode.
8. Click the Submit button to submit the program as a UNIX background job, OR

click the Run button to start the program in foreground and wait.
9. Click the Quit button to quit this program.

• Generate the L2 LAC file 'L2_lac1.hdf' from the L1A LAC file '$SDSDEMO/L1_lac1.hdf with all default input parameters.

l2gen, ifile="$SDSDEMO/L1_lac1.hdf", ofile1="L2_lac1.hdf"


• Generate the L2 file by using the parameter file '$SDSDEMO/l2gen.par'

l2gen, par="$SDSDEMO/l2gen.par"

Generate L3 space or time-binned files from L2 files (l2bin/l3bin)

1. For Space Binning:
Start the l2bin Main Widget:
1. in menu mode, select Process -> SeaWiFS -> l2bin from the SeaDAS main menu
2. Select the input L2 file(s) by pressing the Select button to display the File Selection Widget. After selected, click the Ok button to quit the File Selection Widget.
3. The file selected in the previous step will be listed in Input filename/listfile window. The file(s) will also be scanned for certain default information for space binning that will be displayed inside the Options for l2bin window.
4. Update, if necessary, the information in the Options for Space Bin window.
5. Use Set Flags button, if necessary, to update the flags to be applied in the space binning.
6. Click the Run button to start the program and wait.
7. Click the Quit button to quit this program.
2. For Time Binning:
Start the l3bin Main Widget:
1. in menu mode, select Process -> SeaWiFS -> l3bin from the SeaDAS main menu
2. Select the input listfile containing the filename(s) of the L3 spatially or temporally binned files (not L2 files used in l2bin) by pressing the Select button to display the File Selection Widget.
3. The file selected in the previous step will be listed in Input listfile window. The files contained in the listfile will be scanned for certain default information to be displayed inside the Options for l3bin window.
4. Update, if necessary, the information in the Options for l3bin window.
5. Click the Run button to start the program and wait.
6. Click the Quit button to quit this program.

• For l2bin

• For l3bin

Generate L3 SMI product from L3 binned data (smigen)

1. Start the Smigen Main Widget:
• in menu mode, select Process -> SeaWiFS->smigen from the SeaDAS Main Menu, OR
• in command mode, enter smigen.
2. Enter '$SDSDEMO/L3_daily1.hdf' in the Level-3 binned file field.
3. Select one product at a time for processing. (Note, the products listed in bold are the products that exist in the input files.). Each product added to the final process list will generate one global output file.
1. Modify the Measure if desired.
2. Press different Products to see the Scaling defaults change. The default scaling values are the defaults defined by the SeaWiFS Project.
3. Modify File Out, and ASCII Palette File fields if desired for the current product.
4. To add the product to the list for processing, press Add to Process List.
4. Once all products desired have been added to the process list:
• click the Submit button to submit the program as a UNIX background job, OR
• click the Run button to start the program in foreground and wait.
5. To re-edit your input parameter choices for a listed product,:
• select the product in the product list. The input parameters will be updated with this information.
• Update information
• Press Update Process List.
6. click the Quit button to quit this program.

• Generate the chlor_a SMI file from the Level-3 space-binned file: '$SDSDEMO/L3_gac1-1998097.hdf'.

smigen, ifile='$SDSDEMO/L3_gac1-1998097.hdf', prod_name='chlor_a'


• Generate the chlor_a and nLw_412 SMI files from the Level-3 time-binned file: '$SDSDEMO/L3_daily1.hdf'.

smigen, ifile='$SDSDEMO/L3_daily1.hdf', prod_name=['chlor_a','nLw_412']

Generate L1A browse (Band 865nm) file or L2 browse (chlor_a) file (browse)

1. Start the browse Main Widget:
• in menu mode, select Process -> SeaWiFS -> browse from the SeaDAS main menu, OR
• in command mode, enter browse
2. Enter a SeaWiFS L1A or L2 file in the L1A or L2 file input field.
3. Enter the output file name in the Output browse file: field.
4. Click the Run button to start the program.
5. Click the Quit button to quit this program.

• browse, "$SDSDEMO/L1_gac1.hdf", "L1_gac1_brs.hdf"
• browse, "$SDSDEMO/L2_gac1.hdf", "L2_gac1_brs.hdf"

Generate projected L1A HDF file (bl1map)

1. Start the Bl1map Main Widget:
• in menu mode, select Process -> SeaWiFS -> bl1map from the SeaDAS main menu, OR
• in command mode, enter bl1map.
2. Enter '$SDSDEMO/L1_gac1.hdf' in the Input file field.
3. Enter an output file name in the Output file field.
4. Use the toggle button to select the band and update the title for the band selected to be written to the output HDF file. The title will be used for the SD name in the output HDF file for that band and when it is loaded by seadisp the title name used here will be listed for selection.
5. Select the projection and update the projection parameters (Center Lat/Lon, Rotation, Center Azimuth, Lat Limit, Lon Limit, Isotropic), if necessary, from the Map Projection Inputs window.

NOTE: The SATELLITE projection is NOT currently working.
6. Update the default output image size and output region, if necessary.
7. Click the Submit button to submit the program as a UNIX background job, OR

click the Run button to start the program in foreground and wait.
8. Click the Quit button to quit this program.

• Use STEREOGRAPHIC projection to map bands 1 and 4 in file '$SDSDEMO/L1_gac1.hdf' with output image size 300 x 300 and save to the output file 'L1_gac1_map.hdf'.

bl1map, '$SDSDEMO/L1_gac1.hdf', 'L1_gac1_map.hdf', [1,4], xsize=300, ysize=300, /stereo


• Use MERCATOR projection to map L1 bands 2 and 5 in file '$SDSDEMO/L1_gac2.hdf' with output image size 300 x 400 and save to the output file 'L1_gac2_map.hdf'.

bl1map, '$SDSDEMO/L1_gac2.hdf', 'L1_gac2_map.hdf', [2,5], xsize=300, ysize=400, /merc

Generate projected L2 HDF file (bl2map)

1. Start the Bl2map Main Widget:
• in menu mode, select Process -> SeaWiFS -> bl2map from the SeaDAS main menu, OR
• in command mode, enter bl2map.
2. Enter '$SDSDEMO/L2_gac1.hdf' in the Input file field and hit the Enter key on your keyboard.
3. Enter an output file name in the Output file field.
4. Use the toggle button to select the product and update the title for the product selected to be written to the output HDF file. The title will be used for the SD name in the output HDF file for that product and when it is loaded by seadisp the title name used here will be listed for selection.
5. Select the projection and update the projection parameters (Center Lat/Lon, Rotation, Center Azimuth, Lat Limit, Lon Limit, Isotropic), if necessary, from the Map Projection Inputs window.

NOTE: The SATELLITE projection is NOT currently working.
6. Update the default output image size and output region, if necessary.
7. Click the Submit button to submit the program as a UNIX background job, OR

Click the Run button to start the program in foreground and wait.
8. Click the Quit button to quit this program.

• Use STEREOGRAPHIC projection to map L2 products nLw_412 and nLw_510 in file '$SDSDEMO/L2_gac1.hdf' with output image size 300 x 300 and save to the output file 'L2_gac1_map.hdf'.

bl2map, '$SDSDEMO/L2_gac1.hdf', 'L2_gac1_map.hdf', [1,4], xsize=300, ysize=300, /stereo


• Use MERCATOR projection to map L2 products nLw_443 and nLw_555 in file '$SDSDEMO/L2_gac2.hdf' with output image size 300 x 400 and save to the output file 'L2_gac2_map.hdf'.

bl2map, '$SDSDEMO/L2_gac2.hdf', 'L2_gac2_map.hdf', [2,5], xsize=300, ysize=400, /merc

Generate projected L3 HDF file (bl3map)

1. Start the Bl3map Main Widget:
• in menu mode, select Process -> SeaWiFS -> bl3map from the SeaDAS main menu, OR
• in command mode, enter bl3map.
2. Enter '$SDSDEMO/L3_daily1.hdf' in the Input file field and hit the Enter key on your keyboard.
3. Enter an output file name in the Output file field.
4. Use the toggle buttons in Measure and Product fields to select the output products to be generated and then click the Add button to add those combined selections into the Output list window. Update the titles for the products selected to be written to the output HDF file. The title will be used for the SD name in the output HDF file for that product and when it is loaded by seadisp the title name used here will be listed for selection.
5. Select the projection and update the projection parameters (Center Lat/Lon, Rotation, Center Azimuth, Lat Limit, Lon Limit, Isotropic), if necessary, from the Map Projection Inputs window.

NOTE: The SATELLITE projection is NOT currently working.
6. Update the default output image size and output region, if necessary.
7. Click the Submit button to submit the program as a UNIX background job, OR

click the Run button to start the program in foreground and wait.
8. Click the Quit button to quit this program.

• Use STEREOGRAPHIC projection to generate nLw_412 mean and variance images from L3 BIN file '$SDSDEMO/L3_daily1.hdf' with output image size 200 x 300 and save to the output file 'L3_daily1_map.hdf'.

bl3map, '$SDSDEMO/L3_daily1.hdf', 'L3_daily1_map.hdf', [[1,1], [1,2]], xsize=200, ysize=300, /stereo


• Use MERCATOR projection to generate nLw_412 mean and nLw_555 mean images from L3 BIN file '$SDSDEMO/L3_daily1.hdf' file with output image size 300 x 200 and save to the output file 'L3_daily1_map.hdf'.

bl3map, '$SDSDEMO/L3_daily1.hdf', 'L3_daily1_map.hdf', [[1,1], [5,1]], xsize=300, ysize=200, /merc

L0 regeneration (from L1A) program (l0regen_seawifs)

1. Start the l0regen_seawifs Main Widget:
• in menu mode, select Process -> SeaWiFS -> l0regen_seawifs from the SeaDAS main menu, OR
• in command mode, enter l0regen_seawifs.
2. Enter '$SDSDEMO/L1_gac1.hdf' in the Input L1A file field.
3. Enter an output file name in the Output L0 file field.
4. Click the Run button to start the program.
5. Click the Quit button to quit this program.

• l0regen_seawifs, ifile="$SDSDEMO/L1_gac1.hdf", ofile="L0_gac1.dat"

MODIS Primary Data Product Generation Programs

Generate an L1A and a GEO file from an L0 file (l1agen_modis)

1. Start the l1agen_modis Main Widget:
• in menu mode, select Process->MODIS->l1agen_modis from the SeaDAS main menu, OR
• in command mode, enter l1agen_modis.
2. Enter '$SDSDEMO/MOD00.P2006214.0540_1.PDS' in the Input MODIS L0 (PDS) file field.
3. Optionally enter the name of the output files (if no output names are specified, they will be constructed using the format AYYYYDDDHHMMSS.
4. Click the Submit button to submit the program as a UNIX background job, OR
click the Run button to start the program in foreground and wait.
5. Click the Quit button to quit this program.

Command mode:

• Generate an L1A and a GEO files under the current directory from the L0 file '$SDSDEMO/MOD00.P2006214.0540_1.PDS'.

l1agen_modis, ifile="$SDSDEMO/MOD00.P2006214.0540_1.PDS"

Generate GEO file from L1A file (geogen_modis)

1. Start the geogen_modis Main Widget:
• in menu mode, select Process->MODIS->geogen_modis from the SeaDAS main menu, OR
• in command mode, enter geogen_modis.
2. Enter '$SDSDEMO/A2005191123500.L1A_LAC' in the Input MODIS L1A file field.
3. Optionally enter the name of the output file (if no output name is specified, it will be constructed using the format AYYYYDDDHHMMSS.GEO
4. Click the Submit button to submit the program as a UNIX background job, OR
click the Run button to start the program in foreground and wait.
5. Click the Quit button to quit this program.

Command mode:

• Generate the GEO file under the current directory with the L1A file '$SDSDEMO/A2005191123500.L1A_LAC'.

geogen_modis, ifile="$SDSDEMO/A2005191123500.L1A_LAC"

Generate L1B file from L1A file (l1bgen_modis)

1. Start the l1bgen_modis Main Widget:
• Via the GUI, select Process->MODIS->l1bgen_modis from the SeaDAS main menu, OR in command mode, enter l1bgen_modis.
2. Enter '$SDSDEMO/A2005191123500.L1A_LAC' in the Input MODIS L1A file field.
3. Enter '$SDSDEMO/A2005191123500.GEO' in the Input GEO file field.
4. Click the Submit button to submit the program as a UNIX background job, OR
   click the Run button to start the program in foreground and wait.
5. Click the Quit button to quit this program.

• Generate the L1B file 'A2005191123500.L1B_LAC' from the L1A file '$SDSDEMO/A2005191123500.L1A_LAC with all default input parameters.

l1bgen_modis, ifile="$SDSDEMO/A2005191123500.L1A_LAC", geofile="A2005191123500.GEO"

Generate L2 file from L1B file (l2gen)

1. Start the l2gen Main Widget:
• in menu mode, select Process -> MODIS -> l2gen from the SeaDAS main menu, OR
• in command mode, enter l2gen.
2. Enter '$SDSDEMO/A2005191123500.L1B_LAC' in the Input L1B file field.
3. Enter the L2 output file name in the Output L2 file field.
4. Update, if necessary, the pixel and line range and subsampling.
5. Update, if necessary, the default options and threshold values for flags and masks.
6. Enter or update, if necessary, the file names for ancillary data (MET and OZONE), land mask, and shallow water mask.
7. Save or load, optional, all the input parameters to or from a parameter file:
• enter the parameter file name to be saved to or loaded from in the Parameter file field.
• press the Option button and select Save or Load from the drop down menu.
NOTE: the parameter file saved here may also be used in the command mode.
8. Click the Submit button to submit the program as a UNIX background job, OR
   click the Run button to start the program in foreground and wait.
9. Click the Quit button to quit this program.

• Generate the L2 LAC file 'A2005191123500.L2_LAC' from the L1B LAC file '$SDSDEMO/A2005191123500.L1B_LAC' with all default input parameters.

l2gen, ifile="$SDSDEMO/A2005191123500.L1B_LAC", ofile1="A2005191123500.L2_LAC"


• Generate the L2 file by using the parameter file '$SDSDEMO/l2gen.par'

l2gen, par="$SDSDEMO/l2gen.par"

Generate L3 space or time-binned files from L2 files (l2bin/l3bin)

1. For Space Binning:
Start the l2bin Main Widget:
1. in menu mode, select Process -> MODIS -> l2bin from the SeaDAS main menu
2. Select the input L2 file(s) by pressing the Select button to display the File Selection Widget. After selected, click the Ok button to quit the File Selection Widget.
3. The file selected in the previous step will be listed in Input filename/listfile window. The file(s) will also be scanned for certain default information for space binning that will be displayed inside the Options for l2bin window.
4. Update, if necessary, the information in the Options for Space Bin window.
5. Use Set Flags button, if necessary, to update the flags to be applied in the space binning.
6. Click the Run button to start the program and wait.
7. Click the Quit button to quit this program.
2. For Time Binning:
Start the l3bin Main Widget:
1. in menu mode, select Process -> MODIS -> l3bin from the SeaDAS main menu
2. Select the input listfile containing the filename(s) of the L3 spatially or temporally binned files (not L2 files used in l2bin) by pressing the Select button to display the File Selection Widget.
3. The file selected in the previous step will be listed in Input listfile window. The files contained in the listfile will be scanned for certain default information to be displayed inside the Options for l3bin window.
4. Update, if necessary, the information in the Options for l3bin window.
5. Click the Run button to start the program and wait.
6. Click the Quit button to quit this program.

• For l2bin

• For l3bin

Generate L3 SMI product from L3 binned data (smigen)

1. Start the Smigen Main Widget:
• in menu mode, select Process -> MODIS ->smigen from the SeaDAS Main Menu, OR
• in command mode, enter smigen.
2. Enter '$SDSDEMO/A2005191123500.L2_LAC.L3b_GAC.L3b_GAC' in the Level-3 binned file field.
3. Select one product at a time for processing. (Note, the products listed in bold are the products that exist in the input files.). Each product added to the final process list will generate one global output file.
1. Modify the Measure if desired.
2. Press different Products to see the Scaling defaults change. The default scaling values are the defaults defined by the SeaWiFS Project.
3. Modify File Out, and ASCII Palette File fields if desired for the current product.
4. To add the product to the list for processing, press Add to Process List.
4. Once all products desired have been added to the process list:
• click the Submit button to submit the program as a UNIX background job, OR
• click the Run button to start the program in foreground and wait.
5. To re-edit your input parameter choices for a listed product,:
• select the product in the product list. The input parameters will be updated with this information.
• Update information
• Press Update Process List.
6. click the Quit button to quit this program.

• Generate the chlor_a SMI file from the Level-3 space-binned file: '$SDSDEMO/A2005191123500.L2_LAC.L3b_GAC'.

smigen, ifile='$SDSDEMO/A2005191123500.L2_LAC.L3b_GAC.L3b_GAC', prod_name='chlor_a'


• Generate the chlor_a and nLw_412 SMI files from the Level-3 time-binned file: '$SDSDEMO/A2005191123500.L2_LAC.L3b_GAC.L3b_GAC'.

smigen, ifile='$SDSDEMO/A2005191123500.L2_LAC.L3b_GAC.L3b_GAC', prod_name=['chlor_a','nLw_412']

SeaWiFS Data Extraction and Quality Control Programs

L1A and L2 file extraction (l1aextract_seawifs)

1. Start the Subscene Main Widget:
• in menu mode, select Display -> l1aextract_seawifs from the SeaDAS main menu, OR
• in command mode, enter l1aextract_seawifs.
2. Enter '$SDSDEMO/L1_gac1.hdf' or '$SDSDEMO/L2_gac1.hdf' in the Input file name field.
3. Press Enter key when the cursor is in the Input file name field, OR, click the OK button to load and display the image.
4. Move the cursor inside the image display window and drag the mouse LEFT button to move the highlighted box to the area you want to extract.
5. Move the cursor near to the corner or the side of the highlighted box and drag the mouse RIGHT button to change the size of the highlighted box.
6. Click the Coastline button to display the coastline (Optional).
7. Extract and save the image defined by the highlighted box to a file:
• click the Save button to display the Extraction Saving Widget.
• enter the output file name in the Output file name field for the extracted output.
• update, if necessary, the values that define the area for extracting.
• click Okay button to extract and save to the output file.
8. Click the Quit button to quit this program.

• Extract the area defined by pixel range from 1 to 248 and line range from 50 to 498 from the '$SDSDEMO/L2_gac1' file and save to 'ex_L2_gac2.hdf'.

l1aextract_seawifs, "$SDSDEMO/L2_gac1.hdf", 1, 248, 50, 498, 1, 1, "ex_L2_gac1.hdf"

L1A coastline registration and warping (register)

1. Start the Register Main Widget:
• in menu mode, select Display -> register from the SeaDAS main menu, OR
• in command mode, enter register.
2. Enter '$SDSDEMO/L1_gac1.hdf' in the Input file field.
3. Press Enter key when the cursor is in the Input file field, OR, click the Load button at the bottom of the widget to load the data and display the Scroll Window Widget and the Register Window Widget.
4. Use the scroll bar on the Scroll Window Widget to view the whole image and click the Load to Register button to load the current viewable image to the Register Window Widget.
5. Register the image with the coastline:
• move the cursor inside the image displayed in the Register Window Widget, press and drag the mouse left button. OR
• click the Up, Down, Left, or Right button in the Register Window Widget.
• click the Register button to apply the X/Y shift to the image displayed in the Scroll Window Widget.
• click the Save to file button to save the registered image to a new file.
6. Warp the image:
• click the Warping button in the Scroll Window Widget to display the Warp Image Widget.
• move the cursor inside the image displayed in the Scroll Window Widget, press (don't release) the mouse left button to define the first control point and drag to another position and release the mouse button to define the second point; repeat on this to define several control point pairs.
• click the Undo button in the Warp Image Widget will clear the last defined control point pair.
• click the On/Off button in the Warp Image Widget to toggle the display of the control points on/off.
• click the Warped Image button in the Warp Image Widget to display the warped image defined by the control points.
• click the Original Image button in the Warp Image Widget to display the original image.
• click the Save to file button to save the warped image to a new file.
7. Zoom the image:
• click the Zoom button in the Register Main Widget to open the Zoom Window Widget .
• move the cursor inside the image displayed in the Scroll Window Widget or the Register Window Widget and click the mouse middle button, the image centered at the cursor location will be zoomed and displayed in the Zoom Window Widget.
8. Click the Quit button to quit this program.

L2 display and reprocess (l2chk)

1. Start the L2chk Main Widget:
• in menu mode, select Display -> l2chk from the SeaDAS main menu, OR
• in command mode, enter l2chk.
2. Enter '$SDSDEMO/L2_gac1.hdf' in the Input L2 file field.
3. Press Enter key when the cursor is in the Input L2 file field, OR, click the Load button at the top-right of the widget to load the data and display the image (the first one loaded) of the selected L2 product in the Image and Flags Display Widget.
4. If you want to change the default L2 products (nLw_443, nLw_555, chlor_a) to be loaded and worked on, use the Set up Product List button to do so.
5. If you want to change the L2 product to be displayed, use the L2 Product drop down menu to select the L2 product you want to display.
6. Manipulate flag displaying:
• in the L2chk Main Widget, update, if necessary, the flag(s) to be displayed in the One Flag and Multiple Flags fields by dragging the slide bar next to the One Flag field or by pressing the toggle button in the flag listing window.
• in the Level-2 Image and Flags Display Widget, press the Flag Control button and select:
• Load Default flags to display all the default flags listed in the Default flags field in the L2chk Main Widget.
• Load one flag to append the flag selected in the One Flag field in the L2chk Main Widget to the current display.
• Load multiple flags to display all the flags listed in the Multiple Flags field in the L2chk Main Widget.
• Load all flags to display all the flags.
• Toggle flags off to turn off all the flags currently displayed.
• Toggle flags on to turn on all the flags currently displayed.
• Quick flag on/off loop to turn on/off the currently displayed flags several times.
• Clear all flags to redisplay the selected L2 product without any flags.
7. Define the rectangular area for reprocessing:
• move the cursor inside the image display window in the Level-2 Image and Flags Display Widget; press and drag the mouse Right button to resize the rectangular area, or press and drag the mouse Left button to move the highlighted rectangular box to the area for reprocessing.
• click the Reprocess button to display the Reprocess Set Up Widget.
• update the input parameters under the New column and then click the Go button to start the L2 reprocess on the area defined by the rectangular box.
• When it finished, the Reprocess Display Window Widget will be displayed for you to compare the products and flags between the original one and the new one.
8. Animate the products and flags display:
• click the Animation button in the L2chk Main Widget to display the Animation Set Up Widget.
• update the starting pixel/line in the Image offset field or click the Load Current button for animation.
• select the frames by toggle the Frame number button for animation.
• update the frame information, if necessary, for product and/or flags to be animated.
9. Click the Quit button to quit this program.

Curator: OceanColor Webmaster Authorized by: gene carl feldman

Privacy Policy and Important Notices Updated: Thursday, 20-Mar-2008 16:33:12 EDT