![]() There are more ways of showing the matrix on the map. Depending on the configuration, the newly generated matrix will be drawn over the map. It should take a couple of seconds, you can watch the progress in the status bar of the main window.Īfter generation, you will notice the matrix has been added to the project. The data will be added to the current project and stored in a separate ASCII XYZ file at the desired location.įinally, click the "OK" button to start the process. Use the browse button to select the output folder and file name. Please note that when using a larger spacing, it will be generated and displayed faster then a more dense matrix.Įnter the name of the file that is generated here. When zooming in on a smaller area, the best is to use values between 0.25 and 1.00 meter. For an overview of a large area, you can use 2.5 meter. Which spacing to use, depends on the zoom scale you are using. The spacing has to be entered in the same units as used for the map projection. The same spacing is applied to both the X and Y axis. You can select the spacing of the regularly spaced data here. Select the data source for the matrix cells from the drop down selection. The sensor data channels can be used to store for instance magnetometer or temperature data. Please note that information on bottom loss, reflection, density and porosity will only be available on certain types of echo sounders. When the selected soundings don't contain tide information, the "Depth (Hi Frequency)" is selected by default. If you want to generate the matrix using the corrected depth values, without tide correction, select the "Depth (Hi Frequency)" option instead. ![]() When soundings contain tide information, the "Elevation (Hi Frequency)" option will be selected by default. The difference in depth between the high and low frequency channel (High - Low).The difference in depth between the high and low frequency channel (Low - High). ![]() Elevation recorded with the high frequency channel of your echo sounder.Elevation recorded with the low frequency channel of your echo sounder.Depth recorded with the high frequency channel of your echo sounder.Depth recorded with the low frequency channel of your echo sounder.You can use this setting to select which data of the sounding is used to generate the matrix. Select which boundaries to include in the When no boundary has been selected, the data points of the selected soundings will be used to determine the area that needs to be filed with data. This can be used in cases when only a part of the sounding areas has to be interpolated. When an island or clipping boundary is selected, it will be used to determine which area's should be filled with data and which are not. When a boundary is defined as a shoreline, including the boundary will automatically include the data points defined on this line. In Hydromagic, boundaries can be used do define a shoreline, a clipping area or an island. Select which sounding(s) to include in the By clicking the "Select." button, you will be able to select one or more soundings that will be used to calculate the triangulation from which the matrix or digital terrain model will be generated. Select from which sounding(s) you wish to generate the matrix. Use the "Generate Matrix" utility to generate a matrix by using a TIN algorithm. To do so, open the "Generate Matrix" dialog by selecting rthe "Generate Matrix." option from the "Tools" menu: In order to generate the matrix, you have to specify some settings, like the data being used to generate the matrix, as well as some output options. Use the " Generate sounding wizard" to generate sounding(s) from your raw data file(s) first. Without the sounding or shoreline data it is not possible to generate a matrix. To generate a matrix, you must have a either a valid sounding or a shoreline containing depth information loaded into your project. The image below shows a color matrix which has been generated using TIN (data points at 0.25 meter interval).Įxample matrix generated from sounding and boundary data. All new data points are generated by "filling" the triangles, which have been formed from the scattered data. This TIN is generated using a Delaunay triangulation algorithm. A matrix can be used to view a 3D model of the terrain using the " 3D Terrain Viewer", in volume calculations or to generate depth contours.ĭuring the generation of a matrix from a sounding, the scattered data points are converted to regularly spaced data using a TIN (Triangulated Irregularly Network). Such data is also referred to as a digital terrain model or DTM. In Hydromagic, a matrix is a collection of regularly spaced depths, which can be projected over the map as color or text.
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