Click the matrix cell in row 2, column 1, then click the drop-down button that appears on the right side of the cell. Select "Picture Label" from the label type dropdown menu to set the label type as picture label. The Parameters area appears at the bottom of the "Matrix Label Thematic Map" window for configuring image parameters:

• Image Path: In the combo box to the right of "Picture Path:", select the field Path_1. This field stores weather icons for capitals and provincial capitals on a specific day. For example, if Beijing's weather shows thunderstorms turning to clear skies, the Path_1 contains corresponding thunderstorm weather icons.
• Picture Size：Customize the width and height of pictures, or maintain their original dimensions. Here, check the "Keep Original Size" checkbox to preserve image dimensions.