The official gave some explanations (address: SARscape/SARscape IDL Scripting/SARscape batch object) and some reference examples (address: SARscape/SARscape IDL Scripting/Example).

The secondary development of SARscape can be divided into 10 detailed steps. I will take the code developed by MultiLooking as an example to explain.

Step 1 Batch initialization and temporary directory settings (optional)

Start the SARscape module and set the temporary path.

SARscape_Batch_Init,Temp_Directory=aTmp

Step 2 Show all SARscape functions (optional)

This step is required for writing programs. After determining the name of the function (class) called by the SARScape module, it can be deleted. For specific usage, please refer to the official explanation mentioned above.

;(obj_new('SARscapeBatch'))->Manifest

Note: the latest versions can use "." Instead of "-" > ", it is still used for distinguishing attributes and structures

Step 3 Input data and parameters

You can open the ENVI SARscape module to view the required parameters

; 3) Input data and parameters
  ;  inRasterName_data = theTestDir+Path_sep()+'_pwr';
  ;  outRasterName = theTestDir+Path_sep()+'output'+Path_sep()+'_geo';
  ;  inRasterName_dem = theTestDir+Path_sep()+'start_dem';;
  ;  aGridSize = 25.0

Step 4 Load user specific default files

This default file is used to set cache files and SARscape preferences. For specific settings, refer to Blog

;4) Load user specific default files (i.e SARscape_preferences_user_Sentinel.sml)Optional
  ;/FJEA_Program/Resource/SARscape_preferences_user_Sentinel_TOPSAR.sml
  default_file_name = File_dirname(myResult.path)+Path_sep()+'Resource'+Path_sep()+'SARscape_preferences_user_Sentinel_TOPSAR.sml'
  aRet = SARscape_set_save_actual_default_in_dfl (default_file_name)

Step 5 Set working directory optional (optional)

;5) Set working directory optional
  IF (SARscape_set_working_in_actual_default(aWorkDir) EQ 'NotOK') THEN BEGIN
    ok = Dialog_message('You must initialize a valid working directory' ,/ERROR)
    SARscape_Batch_Exit
    Return
  ENDIF

Step 6 Create concrete objects

This one is used to select functions, such as importing sentinel 1 data, multi view, InSAR, DInDAR, filtering, clipping... The corresponding functions can be found in step 2;

; 6) establish IMPORTSENTINEL1FORMAT object
  aActualStep =  0
  oSB = Obj_new('SARscapeBatch',Module='INSARCOMPLEXDATAMULTILOOKING')
  IF (~Obj_valid(oSB)) THEN BEGIN
    ; Object is invalid, then the user must manage the error
    ; sign out SARscape Batch processing
    SARscape_Batch_Exit
    Return
  ENDIF

Step 7 Fill in parameters

That is, you need to fill the parameters in the object in step 6. Check the parameters you need to fill in, and compare ENVI SARscape, as shown in the following figure;

;oSB.Listparams
oSB->Setparam,'input_file_name', Files[index];Must be a one file process, so write loop
oSB->Setparam,'output_file_name', Out_Path_Name

Step 8 Validation parameters

This step is used to verify whether the filled parameters are feasible.

;8) Validation parameters
    ok = oSB->Verifyparams(Silent=0)
    IF ~ok THEN BEGIN
      Print,' ************************************************************* '
      Print,' The module cannot be executed; Some parameters need to be filled in '
      Print,' ************************************************************* '
      ; Exit from SARscape batch
      SARscape_Batch_Exit
      Return;
    ENDIF

Step 9 Process execution

Process the data according to the previously selected object and the set parameters;

;OK = oSB->Executeprogress()
OK = oSB->Execute()

The difference between the above two codes is that the previous one has processing progress; The latter one has no progress; To use the previous code, you must open ENVI. You can also use the following code to judge whether ENVI is turned on to automatically select;

IF (Strpos(!PROMPT,'ENVI') GT -1 ) THEN BEGIN
      OK = oSB->Executeprogress(show_end_dialog='NotOK')
    ENDIF ELSE BEGIN
      OK = oSB->Execute();
    ENDELSE
    IF ~ok THEN BEGIN
      Print,' Multi view processing: failed '
      SARscape_Batch_Exit
      Return
    ENDIF

        

Step 10 Exit batch program

The last step is to close the SARScape module

; 10)Exit batch program
  SARscape_Batch_Exit

Note:

        1. In the first sentence of the code, you need to add the following sentence. Due to the large range of remote sensing data, the conventional data space (for example, int 2 bytes) cannot be saved, so this code needs to be added, that is, to expand the data storage space and change the int type bytes to 4 bytes

COMPILE_OPT idl2

        2. For the above codes, if the operation is wrong, the result will return 0 or NotOK. If it is correct, it will return 1 or OK. Therefore, judgment can be added to determine where the program is wrong;

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Although the road is endless and faraway, I still want to pursue the truth in the world.