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DEPRECATED: This module is deprecated and should not be used in new processing workflows. It is retained only for compatibility with legacy projects.
The Read Layers from File module reads a legacy text-format earth model file and loads its layer geometry into a g-Platform layer vector item for use in forward modeling workflows. The file describes a layered earth model with named layers, layer velocities, reflectivities, and a set of 3D control points (X, Y, Z) that define each layer surface.
The input file format is a plain-text ASCII file structured as follows: a header section containing the number of layers, a list of layer velocities (m/s), and a list of reflectivities; followed by a point data section where each row specifies a layer name, X, Y, Z coordinates, and three AVO coefficients (A, B, C) for that surface control point. The module groups all control points by layer name to build the complete surface descriptions.
The path to the ASCII text file containing the layered earth model definition. Click the browse button to locate and select the file. The file must have a .txt extension. The file must follow the expected format: first line contains the word describing the file type, second line is a comment, third contains the total number of layers; subsequent lines list velocities for each layer, then reflectivities for each layer, and finally the surface point data with columns: layer name, X, Y, Z, A, B, C. Supplying a file that does not match this format will result in incorrect or empty model output.
The output layer vector item containing all layers loaded from the model file. Each layer carries its name, velocity (m/s), reflectivity, and the list of 3D control points that define the layer surface geometry including optional AVO coefficients. Connect this output to a forward modeling module that accepts a layer model input.