软件名称： golden software surfer v8.02 正式版
软件大小： 17
软件语言： 英文
软件类别： 国外软件
授权方式: 注册版
应用平台： win9x/2000/xp/2003/
更新时间： 2007-12-3 12:36:40
软件介绍:
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golden software surfer v8.02 科学类绘图软件surfer8<br />
golden software surfer v8.02非常不错的科学类绘图软件，surfer8是地质工作者必备的专业成图软件。surfer8是目前最新的版本，可以轻松制作基面图、数据点位图、分类数据图、等值线图、线框图、地形地貌图、趋势图、矢量图以及三维表面图等；surfer8提供11种数据网格化方法，包含几乎所有流行的数据统计计算方法；surfer8提供各种流行图形图像文件格式的输入输出接口以及各大gis软件文件格式的输入输出接口，surfer8大大方便了文件和数据的交流和交换
golden software surfer v8.02 科学类绘图软件简介：
changes and bug fixes in surfer 8.02<br />
====================================<br />
- creating a periodogram from some unusual grids can cause a crash (fixed).<br />
- fixed an internal error when calculating the kriging standard deviation grid.<br />
- fixed a problem with post map label lines being drawn incorrectly.<br />
- fixed an issue with slow save times in the worksheet.<br />
- bitmaps sometimes draw upside down (fixed).<br />
- two small memory leaks were fixed in the bitmap export code.<br />
- fixed some problems with the sylk import/export to make it faster when there <br />
are a lot of cell formats present.<br />
- exporting an "empty" plot to a gsb or mif file resulted in an invalid file (fixed).<br />
- fixed an internal error when saving the worksheet to slk format.<br />
- fixed a problem reading some lvl files that resulted in a "bad format" message.<br />
- the emf import filter reported an "internal inconsistency" error with some<br />
metafiles (fixed).<br />
- metafiles sometimes lose the right and bottom edges when drawn (fixed).<br />
- updated the symbols.srf example to use the latest symbol sets.<br />
- fixed an internal error message during gridding. this was caused by an out of <br />
memory condition that was not correctly reported due to a microsoft bug.<br />
- increased the precision of polynomial regression. this allows a few marginal<br />
cases with large orders to proceed to completion.<br />
- worked around several printer issues related to printing bitmaps. most of<br />
these problems were related to poorly written hp printer drivers that do not <br />
implement the required functionality or report incorrect information<br />
to the program.<br />
- fixed a bug in the inverse distance gridding algorithm that resulted in <br />
incorrect grids if there are no faults and the power is not equal to 2.0.<br />
- some metafiles produced by surfer could not be read by non-golden software<br />
apps due to incorrect information in the metafile header (fixed).<br />
- fixed a bug that caused imported gsi files to import at 1,000,000 times the<br />
correct size.<br />
- modified the base map font scaling to not scale text when the base map is <br />
scaled. this allows the font size displayed in the base map dialog to <br />
accurately reflect the physical size in the drawing, and emulates the surfer <br />
7 behavior. a similar modification was made for symbols in base maps.<br />
- fixed a minor bug that caused the y axis title on variograms from being <br />
updated when the estimator was changed.<br />
- fixed a floating point exception that was triggered by setting the in-line <br />
label font height to 0.0.<br />
- added an error message if an attempt is made to digitize a map with <br />
perspective projection. this is no longer allowed due to accuracy issues.<br />
change the map to orthographic projection before digitizing.<br />
- the mif import filter has been improved to handle rotated text better.<br />
- line width in surface plots was not correct at various zoom levels or when<br />
printed
surfer 8.02插值绘图软件
surfer插值方法介绍<br />
1、距离倒数乘方法 <br />
距离倒数乘方格网化方法是一个加权平均插值法，可以进行确切的或者圆滑的方式插值。方次参数控制着权系数如何随着离开一个格网结点距离的增加而下降。对于一个较大的方次，较近的数据点被给定一个较高的权重份额，对于一个较小的方次，权重比较均匀地分配给各数据点。 <br />
计算一个格网结点时给予一个特定数据点的权值与指定方次的从结点到观测点的该结点被赋予距离倒数成比例。当计算一个格网结点时，配给的权重是一个分数，所有权重的总和等于1.0。当一个观测点与一个格网结点重合时，该观测点被给予一个实际为 1.0 的权重，所有其它观测点被给予一个几乎为 0.0 的权重。换言之，该结点被赋给与观测点一致的值。这就是一个准确插值。 <br />
距离倒数法的特征之一是要在格网区域内产生围绕观测点位置的\"牛眼\"。用距离倒数格网化时可以指定一个圆滑参数。大于零的圆滑参数保证，对于一个特定的结点，没有哪个观测点被赋予全部的权值，即使观测点与该结点重合也是如此。圆滑参数通过修匀已被插值的格网来降低\"牛眼\"影响。 <br />
2、克里金法 <br />
克里金法是一种在许多领域都很有用的地质统计格网化方法。克里金法试图那样表示隐含在你的数据中的趋势，例如，高点会是沿一个脊连接，而不是被牛眼形等值线所孤立。 <br />
克里金法中包含了几个因子：变化图模型，漂移类型 和矿块效应。 <br />
3、最小曲率法 <br />
最小曲率法广泛用于地球科学。用最小曲率法生成的插值面类似于一个通过各个数据值的，具有最小弯曲量的长条形薄弹性片。最小曲率法，试图在尽可能严格地尊重数据的同时，生成尽可能圆滑的曲面。 <br />
使用最小曲率法时要涉及到两个参数：最大残差参数和最大循环次数参数来控制最小曲率的收敛标准。 <br />
4、多元回归法 <br />
多元回归被用来确定你的数据的大规模的趋势和图案。你可以用几个选项来确定你需要的趋势面类型。多元回归实际上不是插值器，因为它并不试图预测未知的 z 值。它实际上是一个趋势面分析作图程序。 <br />
使用多元回归法时要涉及到曲面定义和指定xy的最高方次设置，曲面定义是选择采用的数据的多项式类型，这些类型分别是简单平面、双线性鞍、二次曲面、三次曲面和用户定义的多项式。参数设置是指定多项式方程中 x 和 y组元的最高方次 。
Golden Software Surfer v8.02 正式版
