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BigData Finding Counties


Finding the County and Presenting it Better


    Making a Find Function and using Fields 
        We finished up the last lesson, sorting our data in different ways

                                               

    Now we want to make a formal lookup screen, and showing the results:
      Like this:

                                            

 Hiding the list (field "my Data")
       We start by hiding the buttons and the field "myData" 

        1. click on the field "my Data" and open up the Inspector  - uncheck the "visible" checkbox 
            click on each button and uncheck it's "visible" checkbox
    or 
        2. open up the "Message Box" (the icon is on the LiveCode Menubar") - type hide field "my Data"
            

        Now add a button "Find" and a field "mycounty"

                    on the button, add the code:

on mouseUp
        put field "mycounty" into x
                   find x in  field "mydata"
            end mouseUp


Now add the following
    labels: "County", "Median Age" and "Income"
    text fields: "County", "age" and "Income"

Add to the find button code:

on mouseUp
        put field "county" into x
                   find x in field "mydata"
                    put item 1 into field "County"
                    put item 2 into field "Age"
                    put item 3 into field "Income"
            end mouseUp

                        But it still does not look right, So we have to be more specific:

on mouseUp
        put field "county" into x
                   find x in  field "mydata"
              if the result is empty then
                  put  word 2 of the foundLine into theLineNum
      
                  put item 1 of line theLineNum of field "mydata" into field "County"
                  put item 2 of line theLineNum of field "mydata" into field "Age"
                  put item 3 of line theLineNum of field "mydata" into field "Income"
               end if
            end mouseUp


notes on the new code:

  1.  if the result is empty then -  When the search is successful, the card containing the text appears and a box is drawn around the found text. If the text is not found in the stack, the result function returns "Not found".

   2.  put  word 2 of the foundLine into theLineNum - The function "foundLine" returns  something like "line 3 of field 1" telling you what line number and field that it found the search text. We just want the line #, which is the 2nd word.



Now you have a nice look-up App

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