update grid_size

Author: imutum

README.md

@@ -65,12 +65,19 @@ ds = reader.read("sur_refl_b01")
 
 # 进行切片操作
 # 假设单景大小为 1200*1200
+
 # 这个切片跨越了中心图幅的右边界和下边界
 # mtmhdf 会自动从右侧、下方和右下方的文件中读取对应数据并拼接
 subset = ds[1000:1500, 1000:1500] 
 
 print(subset.shape) 
 # 输出: (500, 500)
+
+# 这个切片会获取中心图幅的全部数据，不会从周边数据拼接
+subset = ds[:] 
+
+print(subset.shape) 
+# 输出: (1200, 1200)
 ```
 
 ## 高级用法

src/mtmhdf/grid2dreader.py

@@ -82,7 +82,7 @@ def __getitem__(self, item) -> np.ma.MaskedArray | np.ndarray:
         return res_data if res_data is not None else np.array([]).reshape(target_shape)
 
 class Grid2DReader:
-    def __init__(self, path:str, grid_format:str=None, do_grid_surround:bool=True, **kwargs):
+    def __init__(self, path:str, grid_format:str=None, grid_size:int=1200, do_grid_surround:bool=True, **kwargs):
         self.path = path
         self.grid_format = grid_format if grid_format is not None else "modis_sin"
         self.file_format = inferrence_format(path)
@@ -97,7 +97,12 @@ def __init__(self, path:str, grid_format:str=None, do_grid_surround:bool=True, *
 
         match self.grid_format:
             case "modis_sin" | "MODIS_SIN":
-                self.tile_grid = TileGridModisSin(gcenter=self.hv, fcenter=path, do_grid_surround=do_grid_surround)
+                self.tile_grid = TileGridModisSin(
+                    gcenter=self.hv, 
+                    fcenter=path, 
+                    gsize=grid_size, 
+                    do_grid_surround=do_grid_surround
+                )
             case _:
                 raise ValueError(f"Unsupported grid format: {self.grid_format}")