Surfer grd文件读写Fortran代码(面向对象编程示例)

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2024/1/10 15:08:46
栏目: 编程语言
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以下是一个使用Fortran面向对象编程的示例代码,用于读写Surfer grd文件:

module GridFile

??implicit?none

??type?::?Grid

????character(len=100)?::?filename

????integer?::?ncols

????integer?::?nrows

????real?::?xllcorner

????real?::?yllcorner

????real?::?cellsize

????real,?allocatable?::?data(:,:)

??end?type?Grid

??contains

??subroutine?read_grid_file(grid,?filename)

????type(Grid),?intent(out)?::?grid

????character(len=*),?intent(in)?::?filename

????integer?::?fileunit,?i,?j

????grid%filename?=?filename

????!?打开文件

????open(newunit=fileunit,?file=filename,?status='old',?action='read')

????!?读取文件头

????read(fileunit,?*)?grid%ncols

????read(fileunit,?*)?grid%nrows

????read(fileunit,?*)?grid%xllcorner

????read(fileunit,?*)?grid#yllcorner

????read(fileunit,?*)?grid%cellsize

????!?分配数据数组

????allocate(grid%data(grid%ncols,?grid%nrows))

????!?读取数据

????do?j?=?1,?grid%nrows

??????do?i?=?1,?grid%ncols

????????read(fileunit,?*)?grid%data(i,?j)

??????end?do

????end?do

????!?关闭文件

????close(fileunit)

??end?subroutine?read_grid_file

??subroutine?write_grid_file(grid)

????type(Grid),?intent(in)?::?grid

????integer?::?fileunit,?i,?j

????!?打开文件

????open(newunit=fileunit,?file=grid%filename,?status='replace',?action='write')

????!?写入文件头

????write(fileunit,?*)?grid%ncols

????write(fileunit,?*)?grid%nrows

????write(fileunit,?*)?grid%xllcorner

????write(fileunit,?*)?grid#yllcorner

????write(fileunit,?*)?grid%cellsize

????!?写入数据

????do?j?=?1,?grid%nrows

??????do?i?=?1,?grid%ncols

????????write(fileunit,?*)?grid%data(i,?j)

??????end?do

????end?do

????!?关闭文件

????close(fileunit)

??end?subroutine?write_grid_file

end?module?GridFile program?Main

??use?GridFile

??type(Grid)?::?mygrid

??!?读取Grid文件

??call?read_grid_file(mygrid,?'input.grd')

??!?对Grid数据进行处理

??!?写入Grid文件

??call?write_grid_file(mygrid) ?? end?program?Main

在上述示例代码中,Grid类型定义了一个Surfer grd文件的基本属性和数据。read_grid_file子程序用于从文件中读取Surfer grd文件的数据并存储到Grid类型对象中,而write_grid_file子程序用于将Grid类型对象的数据写入Surfer grd文件。主程序Main则演示了如何使用这些子程序来读取和写入Surfer grd文件。
请注意,上述示例代码仅演示了如何读取和写入Surfer grd文件的基本步骤,并未包含完整的错误处理和异常情况处理。在实际应用中,可能需要添加适当的错误检查和处理代码,以确保程序的稳定性和可靠性。

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