The intention of advertisers is to display ads that are relevant and engaging for the individual user and thereby are more valuable for the advertisers and users. Statistic Statistic cookies help us to understand how, when, and from where visitors interact with our websites by collecting and reproting information anonymously.Īdvertising Advertising cookies can be used by advertisers to track visitors across websites. These include the cookies LANGUAGE, MAP, DISPLAYSTR, DISPLAYDET and SOUND, which were used for the language currently set, the last map displayed, the settings last used to display strikes and detectors and the setting currently used for playing sound. Preferences Preference cookies enable a website to remember information that changes the way the website behaves or looks, like your preferred language or the map you are looking at. The website cannot function properly without these cookies. ![]() Technically necessary Necessary cookies make a website usable by enabling basic functions like page navigation and access to secure areas of the website. We store the time and the selection of your consent anonymously under the identification stored in cookie "ID". Choose the type of cookies you're happy for us to use (you can change them anytime), or just accept.Ĭertain types of cookie are essential to use our site. Displaying advertisements could share information about your use of our site with advertising partners who may combine it with other information that you are provided to them or that they have collected from your use of their services. We use cookies to personalise content, to analyse our traffic, and to show advertisements. Normalization: The actual gradients g are offset and scaled to produce normalized gradients gn with a maximum output magnitude of amp using a cumulative Laplace distribution yielding gn = amp * (1.0 - exp(sqrt(2) * (g - offset)/ sigma)) where sigma is estimated using the L1 norm of (g - offset) if it is not given.0/270 illuminates from the north (top) and west (left). Optionally, supply two azimuths, azimuth/azimuth2, in which case the gradients in each of these directions are calculated and the one larger in magnitude is retained this is useful for illuminating data with two directions of lineated structures, e.g. The negative of the directional derivative, -, is found negation yields positive values when the slope of z(x,y) is downhill in the azimuthal direction, the correct sense for shading the illumination of an image by a light source above the x,y plane shining from the azimuthal direction. Azimuth: Azimuth is the angle in the x,y plane measured in degrees positive clockwise from north (the +y direction) toward east (the +x direction).Using the RGB system, the format of a color palette isįor each z-slice defined as the interval between two boundaries (e.g., z_0 to z_1), the color can be constant (by letting R_0=R_1, G_0=G_1, B_0=B_1) or a continuous, linear function of z between R_0, G_0, B_0 and R_1, G_1, B_1. Color Palette: The color palette defines the colors applied over a z-range.Wet Areas: The fill for "wet" areas (empty for no wet areas).Dry Areas: The fill for "dry" areas (empty for no dry areas).Lakes: The fill for lakes (empty for no lakes (default defined by Wet Areas)).Rivers: The type/pen pair for rivers (empty for no rivers, command can be repeated seperated by spaces).2 = State boundaries within the Americas.Boundaries: The type/pen pair of political boundaries (empty for no boundaries, command can be repeated seperated by spaces). ![]() When specific level pens are set, those not listed will not be drawn. ![]() To set the pen for each level differently, prepend level/, where level is 1-4 and represent coastline, lakeshore, island-in-lake shore, and lake-in-island-in-lake shore. Shorelines: The level/pen of shorelines (empty for no shorelines, command can be repeated seperated by spaces).Minimum Area: Features with an area smaller than Minimum Area in km² will not be plotted.Scaling: Selects image size in dpi (2 - 400).The resolution drops off by 80% between data sets. Resolution: Selects the resolution of the data set to use ((f)ull, (h)igh, (i)ntermediate, (l)ow, and (c)rude).
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