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roughness.go
70 lines (59 loc) · 1.74 KB
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roughness.go
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/*
Copyright 2016, RadiantBlue Technologies, Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package functions
import (
"encoding/json"
"fmt"
"os/exec"
"strconv"
)
// RoughnessOptions defines options for gdaldem roughness.
type RoughnessOptions struct {
GeneralOptions
}
// NewRoughnessOptions constructs RoughnessOptions with default values.
func NewRoughnessOptions() *RoughnessOptions {
opts := NewGeneralOptions()
return &RoughnessOptions{
GeneralOptions: *opts,
}
}
// Roughness implements gdaldem roughness.
func Roughness(i, o string, options *json.RawMessage) ([]byte, error) {
opts := NewRoughnessOptions()
if options != nil {
if err := json.Unmarshal(*options, &opts); err != nil {
return nil, err
}
}
var args []string
args = append(args, "roughness")
args = append(args, i)
args = append(args, o)
args = append(args, "-of")
args = append(args, opts.GeneralOptions.Format)
if opts.GeneralOptions.ComputeEdges {
args = append(args, "-compute_edges")
}
args = append(args, "-b")
args = append(args, strconv.Itoa(opts.GeneralOptions.Band))
if opts.GeneralOptions.Quiet {
args = append(args, "-q")
}
out, err := exec.Command("gdaldem", args...).CombinedOutput()
fmt.Println(string(out))
if err != nil {
return nil, err
}
return nil, nil
}