数字显微摄影中dmscript与python的通信

Question

我如何在dm-script代码和python代码之间进行协调，这两种代码都是在数字显微照片中执行的

---

在我的特殊情况下，我有复杂的对话。因为对话框在python中不受支持，但在dm-script中，我在dm-script中编写了我的对话框。现在的问题是从对话框传递到python代码

考虑下面的例子：

import DigitalMicrograph as DM

script = """string field_value = "";

class ButtonDialog : UIFrame{
    void field_changed(object self, TagGroup field){
        field_value = field.DLGGetStringValue();
    }
    
    object init(object self){
        TagGroup dlg, dlg_items, field;
        
        dlg = DLGCreateDialog("Type in a number", dlg_items);
        
        dlg.DLGAddElement(DLGCreateLabel("Number:"));
        
        field = DLGCreateIntegerField(0, 10, "field_changed");
        dlg.DLGAddElement(field);
        
        self.super.init(dlg);
        return self;
    }
}

object dialog = alloc(ButtonDialog).init();
dialog.pose();
"""

DM.ExecuteScriptString(script)

# how do I get this?
field_value = ""

Answer 1

DM脚本调用Python脚本

这个答案显示了Python和DM脚本之间的一些通信，但却形成了相反的一面。它还使用持久标记组作为传输代理

从DM脚本向Python内外传递简单值

// //////////////////////////////////////////////////
// Helper methods 
// Build the DM-String representing the PythonScript
// which is then called
// //////////////////////////////////////////////////
string AddPythonValueIN( number val, string valName, string valType )
{
    string py
    py += "\n#Get value DM->Python via global tags" + "\n"
    py += "success, " + valName + " = DM.GetPersistentTagGroup().GetTagAs" + valType + "('Python_temp:in:" + valName + "')" + "\n"
    py += "if False == success:" + "\n"
    py += "    print( 'Error. No value passed in by DM-script sucessfully.' )" + "\n"
    py += "    exit(0)" + "\n"
    return py
}

string AddPythonValueIN( string val, string valName, string valType )
{
    string py
    py += "\n#Get value DM->Python via global tags" + "\n"
    py += "success, " + valName + " = DM.GetPersistentTagGroup().GetTagAs" + valType + "('Python_temp:in:" + valName + "')" + "\n"
    py += "if False == success:" + "\n"
    py += "    print( 'Error. No value passed in by DM-script sucessfully.' )" + "\n"
    py += "    exit(0)" + "\n"
    return py
}

string AddPythonValueOut( string valName, string valType )
{
    string py
    py += "\n#Get value Python->DM via global tags" + "\n"
    py += "DM.GetPersistentTagGroup().SetTagAs" + valType + "('Python_temp:out:" + valName + "'," + valName + ")" + "\n"
    return py
}

string AddPythonPrintModifyPrint()
{
    string py
    py += "\n#Print InValue, modify, print OutValue" + "\n"
    py += "print('InValue',InValue)"+ "\n"
    py += "OutValue = InValue * 2" + "\n"
    py += "print('OutValue',OutValue)"+ "\n"
    return py
}

// //////////////////////////////////////////////////
// Example calls 
// Demonstrating value passing from DM script to a 
// called Python snippet. TagTypes need to be 
// explicit in Python.
// //////////////////////////////////////////////////
void PythonValueInAndOut_Float()
{
    number value = 13.2
    GetPersistentTagGroup().TagGroupSetTagAsFloat("Python_temp:in:InValue",value)
    
    Result( " DM-Script passed value in: " + value + "\n")
    
    string py = "#Script to demonstrate value passing in Hybrid scripts. DM calling Python." + "\n"
    py += AddPythonValueIN( value, "InValue", "Float" )
    py += AddPythonPrintModifyPrint() 
    py += AddPythonValueOut( "OutValue", "Float" )
    
    Result( "\n PYTHON CODE EXECUTES\n           - \n\n" )
    ExecutePythonScriptString( py, 1 )
    Result( "\n           - \n PYTHON CODE FINISHED \n\n" )
    
    if ( !GetPersistentTagGroup().TagGroupGetTagAsFloat("Python_temp:out:OutValue",value))
        Throw("Python value passed out not found.")
        
    Result( "DM-Script received value: " + value + "\n")
    
    GetPersistentTagGroup().TagGroupDeleteTagWithLabel("Python_temp")
}

void PythonValueInAndOut_Double()
{
    number value = 13.2
    GetPersistentTagGroup().TagGroupSetTagAsDouble("Python_temp:in:InValue",value)
    
    Result( " DM-Script passed value in: " + value + "\n")
    
    string py = "#Script to demonstrate value passing in Hybrid scripts. DM calling Python." + "\n"
    py += AddPythonValueIN( value, "InValue", "Double" )
    py += AddPythonPrintModifyPrint() 
    py += AddPythonValueOut( "OutValue", "Double" )
    
    Result( "\n PYTHON CODE EXECUTES\n           - \n\n" )
    ExecutePythonScriptString( py, 1 )
    Result( "\n           - \n PYTHON CODE FINISHED \n\n" )
    
    if ( !GetPersistentTagGroup().TagGroupGetTagAsDouble("Python_temp:out:OutValue",value))
        Throw("Python value passed out not found.")
        
    Result( "DM-Script received value: " + value + "\n")
    
    GetPersistentTagGroup().TagGroupDeleteTagWithLabel("Python_temp")
}

void PythonValueInAndOut_String()
{
    string value = "hallo"
    GetPersistentTagGroup().TagGroupSetTagAsString("Python_temp:in:InValue",value)
    
    Result( " DM-Script passed value in: " + value + "\n")
    
    string py = "#Script to demonstrate value passing in Hybrid scripts. DM calling Python." + "\n"
    py += AddPythonValueIN( value, "InValue", "String" )
    py += AddPythonPrintModifyPrint() 
    py += AddPythonValueOut( "OutValue", "String" )
    
    Result( "\n PYTHON CODE EXECUTES\n           - \n\n" )
    ExecutePythonScriptString( py, 1 )
    Result( "\n           - \n PYTHON CODE FINISHED \n\n" )
    
    if ( !GetPersistentTagGroup().TagGroupGetTagAsString("Python_temp:out:OutValue",value))
        Throw("Python value passed out not found.")
        
    Result( "DM-Script received value: " + value + "\n")
    
    GetPersistentTagGroup().TagGroupDeleteTagWithLabel("Python_temp")
}

ClearResults()
PythonValueInAndOut_float()
PythonValueInAndOut_double()
PythonValueInAndOut_string()

从DM脚本传入和传出Python中的图像数据

// Images and other objects which are in memory can be most easily passed
// by passing their ID value and then finding them by ID.
// However, this does not work if the object would go out of scope at the 
// end of a script (like an image which is not displayed)
//
// To pass a NumpyArray out of Python without showing an image, one can
// instead write the array to the global tags directly, together with the
// information needed to read the tags out into a DM-image
void PythonImageInOut( )
{
    image img := RealImage("test",4,5,5)
    img = icol
    
    Result( " DM-Script passed image ["+img.ImageGetLabel()+"] in.\n")
        
    string py
    py += "\n#Get image DM->Python via imageLabel" + "\n"
    py += "img = DM.FindImageByID("+ img.ImageGetID()+")" + "\n"
    py += "if None == img:" + "\n"
    py += "    print( 'Error.No image passed in by DM-script sucessfully.' )" + "\n"
    py += "    exit(0)" + "\n"
    py += "\n"
    py += "print('Image from DM: Label = ', img.GetLabel())" + "\n"
    py += "print('Image from DM: Name  = ', img.GetName())" + "\n"
    py += "print('Image from DM: Value = \\n', img.GetNumArray())" + "\n"
    py += "del img #ALWAYS delete DM objects in Python scripts" + "\n"
    py += "\n"
    py += "\n#Create DM image in Python and pass out as ID via global tags" + "\n"
    py += "import numpy as np" + "\n"
    py += "data = np.arange(48).reshape(6,8)" + "\n"
    py += "outImg = DM.CreateImage(data.copy(order='C'))" + "\n"
    py += "DM.GetPersistentTagGroup().SetTagAsLong('Python_temp:out:ID',outImg.GetID())" + "\n"
    py += "print('Create new image with ID:',outImg.GetID())"+"\n"
    py += "outImg.ShowImage()    #Image needs to be shown or it will not stay in memory" + "\n"
    py += "del outImg #ALWAYS delete DM objects in Python scripts" + "\n"
    
    Result( "\n PYTHON CODE EXECUTES\n           - \n\n" )
    ExecutePythonScriptString( py, 1 )
    Result( "\n           - \n PYTHON CODE FINISHED \n\n" )
    
    number imgID
    if ( !GetPersistentTagGroup().TagGroupGetTagAsLong("Python_temp:out:ID",imgID))
        Throw("Python imageID value passed out not found.")
        
    image outImg := FindImageByID(imgID)
    if ( !outImg.ImageIsValid()  )
        Throw("Python imageID value passed out but no matching image found.")
        
        
    Result( "DM-Script received image: " + outImg.ImageGetLabel()+ "\n")
    
    GetPersistentTagGroup().TagGroupDeleteTagWithLabel("Python_temp")
    
}


void PythonArrayOut( )
{
    string py
    py += "#Passing Numpy array values via global tags" + "\n"
    py += "import numpy as np" + "\n"
    py += "data = np.arange(6*8*3).reshape(6,8,3)" + "\n"
    py += "outImg = DM.CreateImage(data.copy(order='C'))" + "\n"
    py += "DM.GetPersistentTagGroup().SetTagAsArray('Python_temp:out:array',outImg)" + "\n"
    py += "DM.GetPersistentTagGroup().SetTagAsLong('Python_temp:out:type',outImg.GetDataType())" + "\n"
    py += "for i in range(data.ndim,0,-1):" + "\n"
    py += "    DM.GetPersistentTagGroup().SetTagAsLong('Python_temp:out:dim:' + str(i-1),data.shape[i-1])" + "\n"   
    py += "\n"
    py += "del outImg #ALWAYS delete DM objects in Python scripts" + "\n"
    
    Result( "\n PYTHON CODE EXECUTES\n           - \n\n" )
    ExecutePythonScriptString( py, 1 )
    Result( "\n           - \n PYTHON CODE FINISHED \n\n" )

    number dataType
    if ( !GetPersistentTagGroup().TagGroupGetTagAsLong("Python_temp:out:type",dataType))
        Throw("Python dataType value passed out not found.")
    
    TagGroup dimTG
    if ( !GetPersistentTagGroup().TagGroupGetTagAsTagGroup("Python_temp:out:dim",dimTG))
        Throw("Python dimensions passed out not found.")
    
    number nDim = dimTG.TagGroupCountTags()
    number n0, n1, n2, n3, n4
    dimTG.TagGroupGetIndexedTagAsLong(0,n0) 
    dimTG.TagGroupGetIndexedTagAsLong(1,n1)
    dimTG.TagGroupGetIndexedTagAsLong(2,n2)
    dimTG.TagGroupGetIndexedTagAsLong(3,n3)
    dimTG.TagGroupGetIndexedTagAsLong(4,n4)
    
    image outImg 
    if ( 1 == nDim  )
        outImg := NewImage("Test", dataType, n0 )
    else if ( 2 == nDim  )
        outImg := NewImage("Test", dataType, n0, n1 )
    else if ( 3 == nDim  )
        outImg := NewImage("Test", dataType, n0, n1, n2 )
    else if ( 4 == nDim  )
        outImg := NewImage("Test", dataType, n0, n1, n2, n3 )
    else if ( 5 == nDim  )
        outImg := NewImage("Test", dataType, n0, n1, n2, n3, n4 )
        
    if ( !GetPersistentTagGroup().TagGroupGetTagAsArray("Python_temp:out:array",outImg))
        Throw("Python array data passed out not found.")
    
    Result("\n DM recreated image from array values: " + outImg.ImageGetLabel()+ "\n")
        
    GetPersistentTagGroup().TagGroupDeleteTagWithLabel("Python_temp")
}

clearresults()
Result("\n\nEXAMPLE Python<->DM image passing\n")
PythonImageInOut()
Result("\n\nEXAMPLE Python >DM array passing\n")
PythonArrayOut( )